Proceedings.
By: Karl V. Hoover, editor.
Contributors: Hoover, Karl V. ed.
Publisher: [Commonwealth of Pennsylvania, Bureau of Topographic and Geologic Survey]
Published: 1970
Place of publication: Harrisburg
Language: eng
Number of pages: 278
Subjects: Sand -- United States -- Congresses.; Gravel -- United States -- Congresses.; Mineral industries -- United States -- Congresses.; Mineral resources-conservation -- United States -- Congresses.
Notes: Includes bibliographies.
"Pennsylvania Geologic Survey, fourth series."
Series title on cover: Mineral resources report M64.