High-purity silica occurrences in Pennsylvania
By: by Samuel W. Berkheiser, Jr.
Series: Mineral resource report ;; 88
Publisher: Pennsylvania Geological Survey; Additional copies may be purchased from State Book Store
Published: 1985
Place of publication: Harrisburg
Language: eng
Number of pages: 67
Subjects: Silica -- Pennsylvania.
Notes: Bibliography: p. 38-39.
"Fourth series."