http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Outlook for numerical control of machine tools
a study of a key technological development in metalworking industries
1 online resource (vii, 63 pages) : illustrations.
United States. Bureau of Labor Statistics.
Bulletin of the United States Bureau of Labor Statistics ; 1437