Resource Type
Serial/Series Title
Farmers' bulletin (United States. Dept. of Agriculture)
6
United States Bureau of Mines Reports
6
United States Geological Survey Reports
4
U.S. Geological Survey professional paper
2
Geological Survey professional paper
1
Mineral technology (United States. Bureau of Mines)
1
Technical paper (United States. Bureau of Mines)
1
U.S. Geological Survey bulletin
1