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1
by Hoskins, Donald M.
Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey : Copies purchased from State Book Store, 1983
Third edition.
“...General geology report ;...”Harrisburg : Commonwealth of Pennsylvania, Dept. of Environmental Resources, Office of Resources Management, Bureau of Topographic and Geologic Survey : Copies purchased from State Book Store, 1983
Third edition.
Book