Catalog of the types of recent mollusca of the Academy of Natural Sciences of Philadelphia.
By: Robert Robertson ... [et al.].
Contributors: Robertson, Robert, 1934-; Academy of Natural Sciences of Philadelphia. Dept. of Malacology.
Series: Tryonia -- no. 15.
Publisher: Dept. of Malacology, Academy of Natural Sciences of Philadelphia
Published: 1987
Place of publication: Philadelphia, PA
Language: eng
Number of pages: 140
Subjects: Gastropoda -- Catalogs and collections.
Other titles: Gastropoda, Archaegastropoda, Cyclophoracea.
Notes: Cover title.

"July, 1987."