Forum on geology of industrial minerals, 5th, Harrisburg, Pennsylvania, 1969, proceedings: Themes, 1. Geology of sand and gravel deposits.  II. Can industrial mineral production survive urbanization and conservation.  III. Symposium on industrial mineral, land use, and conservation problems.  by Karl V. Hoover, editor
Contributors: Hoover, K.V.
Publisher: Pennsylvania Geologic Survey
Place of publication: Harrisburg
Language: eng
Number of pages: 278
Subjects: Industrial minerals
Notes: 11