An introduction to Grand Canyon geology /

Bibliographic Details
Main Author:	Collier, Michael, 1950-
Format:	Book
Language:	English
Published:	[Grand Canyon, Ariz.?] : Grand Canyon Natural History Association, [1980]
Subjects:	Geology > Arizona > Grand Canyon.

Description
Physical Description:	42 pages : illustrations (some color) ; 16 x 23 cm.
Bibliography:	Bibliography: page 41.
ISBN:	093821604X