National Bureau of Casualty and Surety Underwriters (U.S.)
, American Standards Association
, American Engineering Standards Committee
and United States. Bureau of Labor Statistics.
Safety Code for Mechanical Power-Transmission Apparatus : Bulletin of the United States Bureau of Labor Statistics, No. 364 ,
Washington, D.C:
G.P.O.,
August 1924, https://fraser.stlouisfed.org/title/4001,
accessed on May 13, 2025.
@FedFRASER