Serial/Series Title
NACA Technical Memorandums
49
NACA Technical Reports
39
NACA Technical Notes
31
NACA Aircraft Circulars
23
United States Bureau of Mines Reports
15
Technical paper (United States. Bureau of Mines)
5
Bulletin (United States. Bureau of Mines)
2
National Bureau of Standards Reports
2
United States Geological Survey Reports
2
Coal-Mine Fatalities in the United States
1
12 More