Triassic echinoids /
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| Format: | Book |
| Language: | English |
| Published: |
Washington :
Smithsonian Institution Press,
1977.
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| Subjects: |
| Item Description: | En Smithsonian contributions to paleobiology. No. 1- . Washington : Smithsonian Institutions Press, 1969- , no. 30. |
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| Physical Description: | 88 páginas : ilustraciones ; 26 cm |