High-purity silica occurrences in Pennsylvania /

Bibliographic Details
Main Author:	Berkheiser, Samuel W.
Format:	Book
Language:	English
Published:	Harrisburg : Pennsylvania Geological Survey : Additional copies may be purchased from State Book Store, 1985.
Series:	Mineral resource report ; 88.
Subjects:	Silica > Pennsylvania.

Description
Item Description:	"Fourth series."
Physical Description:	vii, 67 pages : illustrations, maps ; 28 cm.
Bibliography:	Bibliography: pages 38-39.
ISBN:	0818200715 (pbk.)