Não informado. (1971). Bibliography and Index of Micropaleontology. American Museum of Natural History.
Chicago-referens (17:e uppl.)Não informado. Bibliography and Index of Micropaleontology. New York: American Museum of Natural History, 1971.
MLA-referens (8:e uppl.)Não informado. Bibliography and Index of Micropaleontology. American Museum of Natural History, 1971.
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