Circular to accompany collections illustrating rock-weathering and soil formation which have been prepared by Department of Geology, U.S. National Museum.

Bibliographic Details

Corporate Author:	United States National Museum
Format:	Government Document eBook
Language:	English
Published:	[Place of publication not identified] : U.S. Government Printing Office, 1928.
Subjects:	Soil formation. Weathering. Electronic books.
Online Access:	Connect to the full text of this electronic document