Geology of the Delaware Valley.

Bibliographic Details
Main Author:	Richards, Horace Gardiner, 1906-1984
Format:	Book
Language:	English
Published:	Philadelphia : Mineralogical Society of Pennsylvania, 1956.
Subjects:	Geology > Delaware River Valley (N.Y.-Del. and N.J.)

Description
Physical Description:	106 pages : illustrations ; 23 cm.
Bibliography:	Includes bibliography.