Geology and earth sciences sourcebook for elementary and secondary schools /

Bibliographic Details
Corporate Authors:	American Geological Institute, National Academy of Sciences (U.S.), University of Minnesota, Duluth Branch
Other Authors:	Heller, Robert L. (Robert Leo), 1919-
Format:	Book
Language:	English
Published:	New York : Holt, Rinehart and Winston, [1962]
Subjects:	Geology > Study and teaching.

Description
Item Description:	Held on the Duluth campus of the University of Minnesota.
Physical Description:	496 pages : illustrations ; 23 cm.