Resource Type
Serial/Series Title
NACA Technical Memorandums
51
NACA Technical Notes
38
NACA Technical Reports
27
United States Bureau of Mines Reports
12
National Bureau of Standards Reports
3
Technical paper (United States. Bureau of Mines)
3
Report of investigations (United States. Bureau of Mines)
2
Scientific papers (United States. National Bureau of Standards)
2
Bulletin (United States. Bureau of Mines)
1
Coal-Mine Fatalities in the United States
1
3 More