American Standards Association
, National Fire Protection Association
and United States. Department of Agriculture.
Safety Codes for the Prevention of Dust Explosions: American Standard, Approved by the American Standards Association : Bulletin of the United States Bureau of Labor Statistics, No. 617 ,
Washington, D.C:
U.S. G.P.O.,
January 1936, https://fraser.stlouisfed.org/title/4138,
accessed on November 20, 2024.