North American Paleozoic land snails, with a summary of other Paleozoic nonmarine snails / by Alan Solem and Ellis L. Yochelson.

[Reston, Va.] : Dept. of the Interior, Geological Survey ; Washington : for sale by the Supt. of Docs., U.S. Govt. Print. Off., 1979.

iii, 42 p., 10 leaves of plates : ill. ; 29 cm.

Includes index.

English

June 01, 2002

Bibliography: p. 36-38.