TY - BOOK AU - Schoonover,Lois Margaret TI - A stratigraphic study of the mollusks of the Calvert and Choptank formations of southern Maryland .. T2 - Bulletins of American paleontology, v. 25, no. 94B AV - QE801 .K44 U1 - 564.1 PY - 1941/// CY - Ithaca, N.Y. PB - Paleontological research institution KW - Mollusks, Fossil KW - Paleontology KW - Miocene KW - Maryland N1 - Vita; Thesis (Ph. D.)--Bryn Mawr college, 1940; Bibliography: p. 107-110 ER -