Resource Type
Serial/Series Title
United States Bureau of Mines Reports
5
Information circular (United States. Bureau of Mines)
3
Annual Report of Research and Technologic Work on Coal
1
Farmers' bulletin (United States. Dept. of Agriculture)
1
Report of investigations (United States. Bureau of Mines)
1
Technical paper (United States. Bureau of Mines)
1
Trace elements investigations report
1
U.S. Waterways Experiment Station Reports
1
United States Geological Survey Reports
1