Resource Type
Serial/Series Title
United States Bureau of Mines Reports
12
Farmers' bulletin (United States. Dept. of Agriculture)
8
Information circular (United States. Bureau of Mines)
4
Annual Report of Research and Technologic Work on Coal
1
Bulletin (United States. Bureau of Mines)
1
Fiscal Year 1948
1
Fiscal Year 1949
1
Fiscal Year 1950
1
Report of investigations (United States. Bureau of Mines)
1
U.S. Geological Survey bulletin
1
1 More