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Mineral Resources of Pennsylvania

V1 published
Creators
  1. Ashley, George H.
Deposited September 24, 2014
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Open Access

Sand and Gravel in the Scranton Region, Pennsylvania

V1 published
Creators
  1. Ward, Freeman
Deposited September 24, 2014
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Open Access

High Spots in Pennsylvania

V1 published
Creators
  1. Ashley, George H.
Deposited September 24, 2014
Access
Open Access

Mineral Resources of the Lower Allegheny - Beaver River District

V1 published
Creators
  1. Ashley, George H.
Deposited September 24, 2014
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Open Access

Anthracite Culm and Silt

V1 published
Creators
  1. Sisler, James D.
Deposited September 24, 2014
Access
Open Access