A Practical Classification of Coals

Preliminary report on the geology of Pennsylvania.

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Work Title A Practical Classification of Coals
Subtitle PAGS Progress Report no.89
Access
Open Access
Creators
  1. Ashley, George H.
Keyword
  1. PAGS Progress Reports
License Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
Work Type Book
Publisher
  1. Pennsylvania Bureau of Topographic and Geologic Survey
Publication Date 1926
Deposited September 24, 2014

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Version 1
published

  • Created
  • Added q8336h3713_version1_PAGS_Progress_Report_no.089.pdf
  • Added Creator Ashley, George H.
  • Published