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You searched for: All Subjects Geology--Pennsylvania. Remove constraint All Subjects: Geology--Pennsylvania. Subject Topical Geology--West Virginia. Remove constraint Subject Topical: Geology--West Virginia.
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1. Surface geology of south-west Pennsylvania and adjacent portions of West Virginia and Maryland.

Creator Personal:
Stevenson, John J. (John James), 1841-1924.
Title:
Surface geology of south-west Pennsylvania and adjacent portions of West Virginia and Maryland.
Call Number:
P456
Date:
1879
Description:
Journal article tearout from: Proceedings [of the] American Philosophical Society, v.18:no.104 (1879:Sept.) Paper read "before the American Philosophical Society, August 15, 1879."
Subject Topical:
Geology--Maryland., Geology--Pennsylvania., Geology--West Virginia.
All:
Geology--Maryland., Geology--Pennsylvania., Geology--West Virginia.