Serial/Series Title
NACA Technical Memorandums
54
NACA Technical Reports
40
NACA Technical Notes
30
NACA Aircraft Circulars
25
United States Bureau of Mines Reports
22
United States Geological Survey Reports
10
U.S. Geological Survey professional paper
6
U.S. Geological Survey bulletin
4
Report of investigations (United States. Bureau of Mines)
3
Contributions to economic geology
2
12 More