Author : George Burr Richardson
Publisher :
Page : 126 pages
File Size : 31,77 MB
Release : 1936
Category : Coal mines and mining
ISBN :
Author : Donnel Foster Hewett
Publisher :
Page : 276 pages
File Size : 46,83 MB
Release : 1936
Category : Geology
ISBN :
Author : Geological Survey (U.S.)
Publisher :
Page : 838 pages
File Size : 22,43 MB
Release : 1968
Category : Geology
ISBN :
Author :
Publisher :
Page : 838 pages
File Size : 47,45 MB
Release : 1968
Category : Geology
ISBN :
Author :
Publisher :
Page : 816 pages
File Size : 46,39 MB
Release : 1937
Category : Geology
ISBN :
Author : Geological Survey (U.S.)
Publisher :
Page : 148 pages
File Size : 40,12 MB
Release : 1964
Category : Coal
ISBN :
Author : Charles W. Poth
Publisher :
Page : 54 pages
File Size : 50,73 MB
Release : 1973
Category : Geology
ISBN :
Author : Samuel Grossman Lasky
Publisher :
Page : 836 pages
File Size : 33,67 MB
Release : 1936
Category : Geology
ISBN :
Author : Elmer Davisson Patterson
Publisher :
Page : 94 pages
File Size : 22,88 MB
Release : 1963
Category : Coal
ISBN :
Prepared in cooperation with the Pennsylvania Bureau of Topographic and Geologic Survey.
Author :
Publisher :
Page : 462 pages
File Size : 15,60 MB
Release : 1973
Category : Geology
ISBN :
