Resource Type
Collection
Serial/Series Title
Farmers' bulletin (United States. Dept. of Agriculture)
5
United States Bureau of Mines Reports
4
Farmers' bulletin (United States. Department of Agriculture)
2
Technical paper (United States. Bureau of Mines)
2
47th Congress
1
Mineral technology (United States. Bureau of Mines)
1
Senate executive document (United States. Congress. Senate)
1