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Edwin F. Koppe

3 books found

Books by Edwin F. Koppe
Petrography of the Upper Freeport coalEdwin F. Koppe
⏱ 46m

Petrography of the Upper Freeport coal

Edwin F. Koppe

196346 pp.
CoalEdwin F. Koppe
⏱ 40m

Coal

Edwin F. Koppe

196040 pp.
Petrography of coal in the Houtzdale quadrangleEdwin F. Koppe
⏱ 1h 13m

Petrography of coal in the Houtzdale quadrangle

Edwin F. Koppe

196773 pp.