http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
U.S. Army Ordnance Center and School apprenticeship program for the trade of machinist
US Army Ordnance Center and School Apprenticeship Program for the Trade of Machinist
"This pamphlet supersedes DA Pamphlet 621-68, 22 December 1976."