@book{27717,
	author = {Schoonover, Lois Margaret.},
	title = {A stratigraphic study of the mollusks of the Calvert and Choptank formations of southern Maryland ...},
	publisher = {Paleontological research institution,},
	year = {1941.},
	series = {Bulletins of American paleontology, v. 25, no. 94B},
	address = {Ithaca, N.Y.,},
	note = {Vita.}
}