Reports and maps of the Geological Survey released only in the open files, 1968 /

Bibliographic Details
Main Authors:	Weld, Betsy A. (Author), Griffin, Margaret S. (Author), Brett, George W. (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1969.
Series:	Geological Survey circular ; no. 568.
Subjects:	Geological Survey (U.S.) > Bibliography. Geological Survey (U.S.) > Maps > Bibliography. Geological Survey (U.S.) Maps. Bibliography.
Online Access:	https://purl.fdlp.gov/GPO/gpo115877

Available Online