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|Material Type:||Government publication, State or province government publication|
|All Authors / Contributors:||
Arthur M Piper; Margaret D Foster; C S Howard; Geological Survey (U.S.)
|Notes:||At head of title: Pennsylvania Geological Survey, fourth series.|
|Description:||viii, 406 pages : illustrations, tables, diagrams, folded map (in pocket) ; 23 cm.|
|Series Title:||Pennsylvania.; Bureau of Topographic and Geologic Survey.; Bulletin|
|Responsibility:||by Arthur M. Piper, with analyses by Margaret D. Foster and C.S. Howard ; prepared in cooperation between the United States Geological Survey and the Pennsylvania Topographic and Geologic Survey.|
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