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charles a ashburner
14 cilt bulundu.
Cilt sonuçları
First report of progress in the anthracite coal region
Charles A. Ashburner · Pub. by the Board of Commissioners for the Second Geological Survey
407 sayfa · 1883
Anthracite coal / Coal mines and mining
The product and exhaustion of the oil regions of Pennsylvania and New York
Charles A. Ashburner · American Institute of Mining Engineers?
11 sayfa · 1885
Petroleum / Oil fields / Geology
The geology of McKean County, and its connection with that of Cameron, Elk, and Forest
Charles A. Ashburner · Pub. by the Board of Commissioners for the Second Geological Survey, 1880-81.
371 sayfa · 1881
Geology
The township geology of Elk and Forest counties
Charles A. Ashburner · Pub. by the Board of commissioners for the Second geological survey
405 sayfa · 1885
Geology