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| Author | : | Yanin, B.T. |
| Year of publication | : | 1976 |
| Title | : | [Stratigraphic distribution of rudists in the Cretaceous deposits of Bulgaria]. |
| Journal | : | Bjulleten Moskovskogo Obshchestva ispytatelej prirody, Otd. geologicheskij |
| Vol/No/Pages/Plates | : | 51: 80-90, 3 tabs. |
| Published in | : | Moskva |