Preliminary geologic map of the John Day quadrangle, Oregon /

Bibliographic Details
Main Author:	Thayer, Thomas P., 1907-2004
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Map
Language:	English
Published:	Washington, D.C. : U.S. Geological Survey, 1956.
Series:	Mineral investigations field studies ; MF 51.
Subjects:	Geology > Oregon > Maps.

Evans: Maps File (2nd floor)