Resource Type
Serial/Series Title
Farmers' bulletin (United States. Dept. of Agriculture)
7
United States Bureau of Mines Reports
6
Trace elements investigations report
3
United States Geological Survey Reports
3
Information circular (United States. Bureau of Mines)
2
Technical paper (United States. Bureau of Mines)
2
Coast and Geodetic Survey Reports
1
Mineral technology (United States. Bureau of Mines)
1
Report of investigations (United States. Bureau of Mines)
1
United States Earthquakes
1