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| Author | : | Chubb, L.J. |
| Year of publication | : | 1959 |
| Reference letter | : | a |
| Title | : | Upper Cretaceous of central Chiapas, Mexico. |
| Journal | : | American Association of Petroleum Geologists, Bulletin |
| Vol/No/Pages/Plates | : | 43: 725-756, 10 figs., 3 tabs. |
| Published in | : | Tulsa, Oklahoma |