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Geology of a portion of the Allensville quadrangle, Centre and Huntingdon Counties, Pennsylvania /
by Flueckinger, Linda A. (Linda Ann), 1943-
[Harrisburg, Pa.] : Commonwealth of Pennsylvania, State Planning Board, Bureau of Topographic and Geologic Survey, 1969
“...Progress report (Pennsylvania. Bureau of Topographic and Geologic Survey) ;...”

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