Our changing continent
By: [by John S. Schlee].
Contributors: Geological Survey (U.S.)
Publisher: U.S. Dept. of the Interior, Geological Survey; Supt. of Docs., U.S. G.P.O., distributor]
Published: 1985
Place of publication: [Reston, Va.?]; [Washington, D.C
Language: eng
Number of pages: 23
Subjects: Physical geography -- North America.; Continents.; Geology -- North America.
Notes: Cover title.