Author: Yochelson E.L. & Dutro J.Y. jr.,
Title: Late Paleozoic Gastropoda from northern Alaska
Description: 1960. In folio, broch., pp. 36 + 3 pls. with facing captions, 7 figs. Geological Survey Professional Paper 334-D. Ex Library stamps but very good copy

Keywords: paleontology Panama Canal Zone geology fossil shells


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