Underclay deposits of Somerset and eastern Fayette Counties, Pennsylvania :/ a geological, mineralogical, and chemical study on underclay beds in the Allegheny Formation of southwestern Pennsylvania /

Main Author: Hosterman, John W. 1923-1991
Language: English
Published: Washington : United States Government Printing Office, 1972
Series: Geological Survey Bulletin
Physical Description: 3, 17 stran : ilustrace + 1 mapa, 1 obrazová příloha
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Bibliography: Obsahuje bibliografii
Signatura: X-0700.976
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