Geology and Paleontology of Canal zone and adjoining parts of Panama : description of Tertiary mollusks ( additions to gastropods, scaphopods, pelecypods : nuculidae... /
by W. P. Woodring.
-- Washington : United States Government Printing Office, 1973
- P. 453-539, [17] h. de lam. --
(Geological Survey Professional Paper ; 306-E).
Canal de Panamá Gasterópodos Geología Paleontología