American Standard Practice For Rock-Dusting Underground Bituminous-Coal and Lignite Mines to Prevent Coal-Dust Explosions (Asa Standard M13.1-1960, Udc 622.81).
Series: Information circular (United States. Bureau of Mines) -- 8001
Publisher: s.n
Published: 1961
Place of publication: S.l
Language: eng
Notes: 1