http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
Preliminary report. Industry series. Special trade contractors, N.E.C. (industry 1799)
Census of construction industries (1982)
Industry series, special trade contractors, N.E.C. (industry 1799)
Special trade contractors, N.E.C. (industry 1799)