According to Wikipedia, it was in the January 1969 issue of the Japanese periodical Big Comic, released in that country in October of 1968, that the first Golgo 13 adventure was presented. After a few years of adventures the stories (or 'chapters') were repackaged into tankobon format with each volume containing several of the previously released adventures.
The titles of the Japanese stories are:
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1. Operation Big Safe
2. The Howls Of Delos
3. Perversion Of A Wolf And Rose
4. The Faded Crest
5. Sleepers In The Cage
6. The Midnight Sun Wails For Love
7. Booby Trap
8. The Black Simoom
9. Cote D'azure
10. Golgo In The Sandstorm
11. Where The Stagecoaches Ran
12. Gt The Sniper
13. Melancholy Summer
14. Bannings The Hunter
15. Who!?
16. Congestion Of Murder
17. Blood In The Stadium
18. White Deadline
19. Via Beirut
20. Insect: The Last Spy
21. Love Is A Knife
22. Dr. V. Walter
23. Inland Area
24. Inspection See-Through
25. Masked Target
26. Expired Fineries
27. Cherbourg O300
28. Maddy Blood
29. Valueless Value
30. The Magic Flute Shutsuka
31. Under A Dark Streetlight
32. Returned Target
33. Hungry Republic
34. When You Look Good In Mourning Dress
35. The Land Of Rage
36. Number Deposit Account
37. At Pin-Hole!
38. Laotian Keshi
39. Snow On The Shoulders Of A Black Dress
40. Manitoba
41. And Death Remained
42. Her Majesty's Melancholy
43. Gate In
44. Voodoo
45. Alaskan Operatives
46. ??Fangs For Requiem
47. Rio's Funeral Procession
48. Nazi Swastika Does Not Rust
49. Ra Karunabaru
50. Room No. 909
51. Infiltration Route “G3”
52. Five People On The Border
53. Woman In Naples
54. Harvest Of Death
55. Angry Waves
56. Forest Of Killing All
57. Cassowary
58. The Shadow Of The Caribbean Sea
59. Japanese By Token
60. Backlight In The Desert
61. Accidental
62. Kowloon's Hunger
63. Moscow Doll
64. Pegasus Plan
65. Blind Spot Cross Section
66. Oath To The Coffin
67. Dabbie!
68. Those Who Carry Death
69. Action In 4/24
70. Heat Wave
71. European Bureaucratic Special Flights
72. Afterglow
73. White Giant
74. Early Autumn
75. East Of Suez
76. The Day When The Witch Came Out
77. Jet Stream
78. Haunted Regular Flights
79. Peggy's Lullaby
80. One Shooting Murderer
81. Eva Heading To The Sea
82. Killing Crest Five Claw Dragon
83. The Dark-Skinned Sniper
84. Ministry Of National Order Maintenance
85. Statistical Analysis Shooting Dallas Suspicion
86. Broken Arrow
87. Corridor To Hell
88. Hydra
89. Plutonium-239
90. The Real Face Of The Infiltrator
91. Island Of Magic
92. Curved Man
93. The Night Never Disappears
94. Catastrophe
95. The Superstar
96. California Corps
97. Lady Bitch
98. Request From The Saint
99. Reunion To The 60-Day Blank
100. The Serizawa Family Murders
101. Halloween New York
102. The Song Of The Dead
103. Casting
104. Scandal Accounts Payable
105. Shadow Of Death
106. Burnt Sand
107. Missing Mr. H
108. Emperor's Trap
109. Howard Hughes' Son
110. Playback
111. Freezing Strait
112. Assassin Order Of Assassins
113. Check Mate
114. Stalemate
115. An Offering To God
116. Rape Counting Song
117. Extermination
118. On Large Mouth Lake
119. Three Female Leopards
120. Light Firearm Vs Tank Gun
121. Battleship Yorkshire Rebellion
122. Dictator's Supper
123. Tumbleweed
124. Caribbean Blood Clot
125. Lake Titicaca Is Sucking
126. Far From An Era
127. Tarantura = Butoh Spider
128. Grated And Spy Legend
129. The Brutes' Banquet
130. Sexy Tiger
131. Hilarious Sniper
132. Wings Of Death Should Be Touched
133. China Town
134. Touch Down
135. Flying
136. The Sea God Awakens
137. The Orbital Hit
138. American Gentiles
139. Gravestone In Sicily
140. Ivory Connection
141. The End Of The Blue Wolf
142. With The Wharf In My Hand
143. Survivors From Hell
144. Hit And Run
145. Mongolian Hawk
146. La Magno Diaz
147. Queen Of Mystery
148. Under The Rose
149. Burial Of Tripoli
150. Private Time
151. Death To The King
152. Sir Hume's Last Case
153. Midnight Angel
154. Dark Ocean Current
155. The Bridge Collapsed
156. New York Mystery
157. Behind The President
158. Mesrine's Cat
159. Pinch Hitter
160. Artisanal Mining
161. Fully Open The Engine
162. Night Fog In Petticourt Lane
163. Zero Counterattack
164. Robben Prison Island
165. Sleeper Agent
166. Reborn Standing Bear
167. Christmas 24 Hours
168. Mao Zedong's Will
169. Mona Lisa Bullet Holes
170. Client Tomorrow
171. King Of Birds
172. Kidnapping Of Persephone
173. Boiling
174. Boiling, Fourth Reich
175. Lion Chair
176. Grain War Mantis Ax
177. Ebony Eyes
178. Sieg Heil !!
179. Zdrowas Maryjo
180. Grain War Mantis Ax Dirty Gold
181. Satotsu Foreign
182. Saturday Night Special
183. Collapse Fourth Reich Wolf's Lair
184. Telepath
185. Unexpected People
186. American Dream
187. Fugu Season
188. Argentino Tigre
189. Little Havana
190. Complex Target Group
191. Last Loop
192. Bump The Gulliver
193. Kremlin Address Book
194. 110 Degree Aim Point
195. The Messenger
196. Machine Cowboy
197. Go Up
198. Simpson Track
199. Death Fight Diamond Cut Diamond
200. 7 Cottage Case
201. Luther King's Legacy
202. Proxy Fight
203. Female Cameraman Kim
204. Headhunter
205. Betrayal Swastika
206. Debugging
207. The Seal Of Darkness
208. Bishop Bio Gregorio
209. Marine Accident Inquiry
210. Moments Of Truth
211. Az4 Cp72
212. Dead Angle
213. Wasteland
214. Spanish Harlem
215. Rockford's Ambition
216. Major Operation
217. Heron Lucky
218. Rockford's Ambition <The Blind Spot Of The Conspiracy>
219. Child Of The October Revolution
220. Irish Paddies
221. Caesar's Eyes
222. Flashback
223. False Five-Star Red Flag
224. Illegal Wife
225. Sovkhoz
226. Fire After
227. The Law Of Pedigree
228. Hollywood Gambling
229. Steinbeck Iii
230. Soldier Sleeps In The Forest
231. Invisible Wings
232. Psychic Weapons
233. Ballistic
234. A Man Without A Heart
235. Wild Geese
236. Kgb Long Arm
237. Phantom cultivation
238. Nightmare
239. South Florida Murder Game
240. System Down
241. Dive To Tripoli
242. Experiment With Dragon Bird
243. Iceberg Cut
244. Acrobatics
245. Swap prisoner exchange
246. Invisible Army
247. Field Test
248. Hollywood Cinderella
249. Route 95
250. Battle Of Sands
251. Wapping Fortress
252. Lebanon's Impatience
253. Private Life Of A University Professor
254. Twenty Years Of Poison
255. Santa Anna
256. Pollution Of Paradise
257. Hidden Message
258. Russian Crisis
259. Persona Non Grata
260. Last Gauguin
261. West Longitude 175 Degrees
262. All People's
263. Devil's Island Shadow
264. Civilian Control
265. Superstar Co-Star
266. Vatican set
267. Murder Spell Macumba
268. Lonesome George
269. Beyond The Hot Sand
270. Legend Of The Vulture
271. 14k Mystery
272. Moscow Platoon
273. White Circus
274. North Assassination Instructor
275. The Dolphin
276. A False News Program
277. 200 Years Of Reincarnation
278. Italian Connection
279. Levant Triangle
280. Yellow Pest
281. West Side Of Romeo
282. Program Trader
283. Legacy For The Future
284. Hungry Wolf Dancing Sea
285. File Loss
286. Eastern Europe Turbulence, Six-Day Revolution
287. The Realm Of God
288. Germany Is One
289. West Bank
290. The Deaths Of June 3rd
291. Miscalculation Of Artificial Intelligence Ai
292. Faceless Fugitive
293. Japan-Us Rice War
294. Mammoth Fangs
295. Encore Smile
296. F1 Circus
297. K Day Countdown
298. Source Of Information Leakage
299. East Asian Cooperative Sphere
300. The Last Battlefield
301. Way Of The Wiseguy
302. The Mystery Of Awakening And Coup
303. Round Village
304. Siberian Whistle
305. Golden Man
306. Ghosts In A Safe Zone
307. Quiet Anniversary
308. Masterpiece Assault Rifle
309. No Relation
310. Last Customer
311. The Silent Army
312. Seed Finder
313. Media Control
314. Black Giant Legend
315. Medellín Cartel
316. Chaotic Empire
317. Black Star
318. Bionic Soldier
319. Eye Of God
320. Best Bank
321. 15-34
322. Straight And Curved Wilderness
323. Memory Of Moscow
324. The Lost Assignment
325. Kurekoshi Doshu
326. Hatty At 90 Degrees North Latitude
327. Knights Of The Round Table
328. Offside Trap
329. Eavesdropping On The Guardian Palace
330. White Imperial Army
331. 13 Counts
332. Japan Original
333. Power To The People
334. Fifty Years Of Loneliness
335. The Arms Of Angels And Demons
336. Mark's Request
337. Murder Manual
338. Cold-Blooded Catherine
339. Stinger
340. The Saint Of The Putrid
341. Far Neighbor
342. False Sky Coordinates X
343. Pathogen Level 4
344. Empire On The Sand
345. “E” Work
346. Request Of King Gordoin
347. Remains
348. Deng Xiaoping's X-Day
349. North Sea Chimney Ship
350. Okinawa Syndrome
351. Shivering Tact
352. 13th Jury Trial
353. Information Game
354. White Dragon Rises
355. Last Jihad
356. Death To Cowards
357. End Of The Century Hollywood
358. False Star-Spangled Banner
359. Art Forgery
360. The Wrong Man
361. Over The Sky
362. Mission In Hell
363. Risky Business
364. The Gun At Am Shara
365. Hostage Hostage
366. The Night Before The Return
367. Zero Emissions Zero Emissions
368. Predatory Forest
369. English Rose
370. Bloody Prison
371. Underground Over The Sky 2
372. Sphinx Smile
373. Final Encryption
374. Shutter
375. S ? F ? Z
376. Timor's ? ?
377. One Minute Past Midnight
378. 3 Million Postcards
379. The Light And Shadow Of Vilnius
380. Directing Nation
381. Between The Two Oceans
382. Golden Dog
383. Privilege Is A Double-Edged Sword
384. Conditions For The New Pope
385. Sherlock Holmes
386. Girl Sarah
387. Battlefield Missile Defense Tmd Illusion
388. Double Meaning
389. Pest War
390. Black Memory
391. Patchwork Bees
392. Synchrotron Bessy-1
393. 2000.2.29
394. Oda Ibun
395. Cuff Cars Group Wolf
396. Jesus In Tears
397. Twilight Kashmir
398. Survival Probability 0.13%
399. Meiou's Secret Agreement
400. Pandora's Coffin
401. When The Earth Moves
402. Wriggle Of 100 Million People
403. Talkative Coins
404. Fearless
405. Quiet Meadow
406. Genetic War
407. Queen Of Mystery ? 2
408. The Night Of The Murder
409. Signs Of Sudden Death
410. Elevate Irisk
411. Hundred Mao Zedong
412. John 11:10
413. Peeled Plating
414. Holiday In The Park
415. Suspect Togo
416. According To Ancient Law
417. God's Ear, Echelon
418. Armored Soldier Sdr2
419. Village Jack
420. Frozen Flame
421. Biles Chase
422. Stranger
423. Crash! Ak-100 Vs M-16
424. Distorted Wheels
425. Offerings To The Dragon
426. The End Of The Feast
427. Bomb Demon
428. Extreme Target
429. A True Berliner Citizen
430. Fragrant Jewels
431. Ubiquitous Maze
432. Mask
433. The Brave Wins
434. The Fate Of Falling Down
435. The Sun On The Ground
436. A Lifetime
437. Last Great Game
438. Universal Vector Vogue
439. Fire!
440. PKO
441. Payback
442. Frigid Land
443. Those Who Fish On The Battlefield
444. 3/7
445. Airport Island
446. Coltan Fantasy
447. Chameleon Troops
448. Dirty Wing
449. Fort On The Ice
450. Paraiba Blue
451. Suba Heritage
452. Suba Heritage Then
453. Request Pending
454. Beholder
455. Forgive False Charges
456. Concealment Of Nomonhan
457. Beijing Butterflies
458. Sea Mine
459. Pandemic
460. Oligarch's Retaliation
461. Close-Up Sniper
462. Donau-Line Maze
463. Darfur's Nightmare
464. Ring Castle
465. Replay
466. Red May Mission
467. Bolivar Ii Assassination Plan
468. Microterrorists
469. Tattoo
470. East German Wreckage
471. The Violence Of The Far East
472. Burning Ice Block
473. Delete G
474. Sleep At The Bottom Of History
475. Holy Bank
476. Analyze Ukraine
477. Death-Calling Whistle
478. Far North Terror
479. Fool's Gun
480. Nostra's Prophecy Box
481. Murder Investment
482. Identification Of The Loss Of Pigeon Blood
483. Heinrich's Law
484. Impossible Intrusion
485. Reincarnation Of Desire
486. Forgiven Life
487. Azhdahaka's Feathers
488. The Eve Of The Depression
489. Chimimory? Well
490. Who Could Have Done It
491. Arena Di Verona
492. Revived Latent Image
493. Faceless Grim Reaper
494. Giza's Ugliness
495. Epidemic At An Altitude Of 10,000 Meters
496. Guantanamo Minefield
497. Rouran, The Wandering Grim Reaper
498. Cage Country
499. A Famous Car That Has Fallen
500. The First Sniper
501. Disguise Request
502. Chimera Power
503. Act-X
504. Brother Hood Bond
505. The Target Is A Hilarious Devil
506. Poisonous Fangs In The Sky
507. Far North Route
508. Emissary From The Canopy
509. Crisis Of Another Dimension Experiment
510. Death Of A Good Man
511. Svalbard Cold Coast
512. Japan-Asean Conference
513. G13 File
514. Diplomatic Legendary Man
515. Giants Scenario
516. Friends
517. Micro Oil Field
518. Beyond The Meteor Rain
519. 10,000 Km Sniper
520. Not Sick
521. Stock
522. 13th Guest
523. Snipers
524. Bloody Maha
525. Faceless Man
526. A Country Without An Army
527. Persian Gulf Crisis Presidential Election
528. Bitter Chocolate
529. Corroded Steel
530. Beast Hole
531. Silent Partner
532. Shivering Trainees
533. Death Pool
534. A Man Named Father
535. Guns In The Land Of Forests And Lakes
536. God's Mallet
537. Octopus Fake Bait
538. World Heritage In The Shadows
539. The Boy Who Called The Miracle
540. The Land Of The Dead And The Smell Of Death
541. PTSD
542. Black And White Production
543. Summer Of The 13th Year Of The Cicada
544. European Rebirth Eu Automobile War
545. Shirodan Memoirs
546. At A Strange Bar
547. Cannabis Business
548. Offense And Defense Of The Final Currency
549. Repossession Aircraft Recapture Strategy!
550. Power Of Destiny
551. Attempted Matter
552. Returning To Japan
553. Hunger In Aden Bay
554. Big Data
555. General Rommel's Treasure
556. Hell Dancer
557. 33+G
558. Drone Revolution
559. Abandoned City
560. Jomon Fire
561. The Great Game
562. G Gene
563. Lovebirds
564. Final Weapon Asteroid Bomb
565. Armstrong's Will
566. Kalmia Hair Ornament Woman
567. Eye Construction
568. G Battlefield Ninja
569. Morning Of Diplomatic Recovery
570. Hero Sleeps In The Wind
571. Futuro De Bolivia
572. Drug Subway
573. Ryukyu Sheep
574. Tears Freeze
575. Witch Ammunition
576. Dreamland
577. Chongqing Doryu
578. Offshore Lies
579. Overrun
580. A Man Standing In A Building
581. Deep Sea Shield, Silent Submarine
582. Knight Of Malta (Cavaliere)
583. White Hacker
584. Disciple Of The Information Shop
585. Hell Hover Race
586. Panda Diplomacy
587. Gorgoda Girl
588. Nile's Ambition
589. Marksman Marksman
590. Qatar's Sword
591. Unlucky Woman
592. Simultaneous Landing Of Multiple Bullets
593. Ai Metis
594. Caribbean Hegemony
595. Woman In Paradise
596. Dead Hand
597. Disillusioned Atlantis
598. Moldova's Roar
599. Who Is The Coward?
600. Silver-Winged Bride
601. Unhealed Wounds
602. Forest Of Evil Spirits Without A Map
603. Pandora's Jar
604. Rbg Nightmare
605. On The Other Side Of The Globe
606. Easy Job
607. Cingulata Spring
608. Jigsaw Code
609. Sniper Without Request
610. Preparedness Is Everything
611. Reverse-Minded Plant Academy
612. Beyond Chance
613. Open Dialogue
614. Final Virus
Special 1. 17 Thirst
Special 2. Portrait Of A Death Mask
Special 3. International Diamond Security Organization
Special 4. Kill The White Pig On Your Birthday !!
Special 5. Wonderful Chicago
Special 6. Death Valley (Desu. Barei )
Special 7. Shoot Butterflies !!
Special 8. Hero City
Special 9. Heading North With The Emperor
Special 10. Acapulco Night Of Scattering
Special 11. Farewell To The Detective
Special 12. B & C Club Member Dies
Special 13. A Shot In G
Special 14. Eggplant
Special 15. Mating Material
Special 16. Dirty Grade Race
Special 17. Phantom Giselle
Special 18. How Are You, President Washington?
Special 19. Indian Summer
Special 20. Signpost Of The Plague God
Special 21. Public Execution Day
Special 22. Caribbean Dreams
Special 23. Miracles Of Miami
Special 24. Proud Wine
Special 25. Death Mask House
Special 26. Cross Angle
Special 27. People Waiting For The Bus
Special 28. Death Of Mr. And Mrs. Crown
Special 29. Crush The Joker
Special 30. Dream Of Yume
Special 31. Die To Westwood
Special 32. Criminal Accusation Iron Cross
Special 33. Crazy Park
Special 34. Blood Sample G
Special 35. Those Who Do Justice
Special 36. The Best Day Of Ash
Special 37. Devil On The Snow
Special 38. Sniper Street
Special 39. A Fierce Southern Current
Special 40. 1 Second Out Of 36000 Seconds
Special 41. Black Communication
Special 42. Amur Sanctions
Special 43. Ghosts Of The 50th Year
Special 44. God's Hand
Special 45. Early Dawn Target
Special 46. ??Milky Darkness
Special 47. The Old Lion
Special 48. Full Mark
Special 49. Forbidden Words
Special 50. 13 Sniper On The Stairs
Special 51. Professional
Special 52. Happy End
Special 53. Undersea Pig
Special 54. A Sign Of Gratitude
Special 55. Drops Of God
Special 56. Glass Fort
Special 57. President's Cradle
Special 58. A Year And A Half Butterfly
Special 59. Altitude 7000 Meters
Special 60. Atomic Culture
Special 61. Archipelago Oil Siege Net
Special 62. Florida Chase
Special 63. Rusted Gold
Special 64. Red Trophy
Special 65. Fire Testimony
Special 66. Flagburner (Shoot The Star-Spangled Banner)
Special 67. Silicon Island
Special 68. Tamil Tiger
Special 69. Devil's Strait
Special 70. Woman With Boomerang
Special 71. Three Snipers
Special 72. 13 Phobia
Special 73. Pinhead Shoot
Special 74. Future Predictive Shooting
Special 75. The Last Liquor
Special 76. The Sight Of A Woman
Special 77. 1 Inch Illusion
Special 78. Sanctuary
Special 79. Rough Land
Special 80. Recurrence / Guillain-Barré Syndrome
Special 81. Between Europe And Asia
Special 82. When The Town Is Dying
Special 83. Disappearing Sea Area
Special 84. The River That Divides Life And Death
Special 85. Chickens Shed Blood
Special 86. Princess Tears
Special 87. The Mobs
Special 88. Spiral
Special 89. One Shot
Special 90. Ambush
Special 91. Doll House
Special 92. A Drop Of An Angel
Special 93. Ssangyong Sniper Command
Special 94. Dogman's Nose
Special 95. Living Corpse
Special 96. Resurrection / Rakshasa
Special 97. Summer Old Man
Special 98. Deadly 0.5 Seconds
Special 99. Suspicious Pacemaker
Special 100. Break The Beast's Claws
Special 101. Floor To Death
Special 102. Caribbean Human-Eating Fungus
Special 103. 1 Hour Of Jinneman
Special 104. Contraindicated Scope
Special 105. The Disappeared Manuscript
Special 106. Another Professional