Hosterman, John W. 1923-
Underclay deposits of Somerset and Eastern Fayette Counties, Pennsylvania / By John W. Hosterman. -- Washington : United States Givernment Printing Office, 1972 - 17 p. il. -- (Geological Survey Bulletin ; 1363).
Fecha real de registro 11-6-1973
552.523(748)
Underclay deposits of Somerset and Eastern Fayette Counties, Pennsylvania / By John W. Hosterman. -- Washington : United States Givernment Printing Office, 1972 - 17 p. il. -- (Geological Survey Bulletin ; 1363).
Fecha real de registro 11-6-1973
552.523(748)