Collection
Serial/Series Title
NACA Technical Memorandums
4
NACA Technical Reports
4
NACA Technical Notes
3
NACA Aircraft Circulars
2
United States Bureau of Mines Reports
2
Coal-Mine Fatalities
1
Information circular (United States. Bureau of Mines)
1
Leaflet (United States. Department of Agriculture)
1
Report of investigations (United States. Bureau of Mines)
1
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