Resource Type
Collection
Serial/Series Title
NACA Technical Notes
39
NACA Technical Memorandums
34
NACA Technical Reports
34
United States Bureau of Mines Reports
18
United States Geological Survey Reports
13
Geological Survey bulletin
6
NACA Aircraft Circulars
5
Report of investigations (United States. Bureau of Mines)
5
U.S. Geological Survey bulletin
4
Contributions to economic geology
3
26 More