Serial/Series Title
NACA Technical Memorandums
53
NACA Technical Notes
44
United States Bureau of Mines Reports
35
NACA Technical Reports
34
NACA Aircraft Circulars
23
Report of investigations (United States. Bureau of Mines)
11
United States Geological Survey Reports
11
Coal-Mine Fatalities
8
U.S. Geological Survey professional paper
8
Shorter contributions to general geology
6
19 More