Catalog of the types of neontological mollusca of the Academy of Natural Sciences of Philadelphia.
Subtitle: Archaeogastropoda, Trochacea, Trochidae, Stomatellidae
By: Robert Robertson ... [et al.]
Contributors: Robertson, Robert, 1934-
Series: Tryonia -- no. 7.
Publisher: Dept. of Malacology of the Academy
Published: 1983
Place of publication: [Philadelphia, Pa.]
Language: eng
Number of pages: 90
Subjects: Gastropoda -- Catalogs and collections
Notes: "May 31, 1983"

Cover title.