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| 090 | ⊔ | ⊔ | ‡aQE10 ‡b.I64 1956 sec.3 |
| 035 | ⊔ | ⊔ | ‡a(OCoLC)5271169 |
| 111 | 2 | 0 | ‡aInternational Geological Congress. ‡n(20th : ‡d1956 : ‡cMexico City) |
| 245 | 1 | 0 | ‡aGeologia del petroleo : ‡bseccion III : Congreso Geologico Internacional, XX Sesión, Ciudad de México, 1956 |
| 260 | 0 | ⊔ | ‡aMexico, D.F. : ‡bThe Congress, ‡c1957 |
| 300 | ⊔ | ⊔ | ‡avi, 251 p., [27] leaves of plates : ‡bill., maps (some folded) ; ‡c24 cm |
| 538 | ⊔ | ⊔ | ‡aMode of access: Internet. |
| 650 | ⊔ | 0 | ‡aPetroleum ‡xGeology ‡xCongresses |
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