http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
industry series, structural steel erection special trade contractors, SIC 1791
Census of construction industries (1977)
Industry series, structural steel erection special trade contractors, SIC code 1791
Structural steel erection special trade contractors, SIC code 1791
29 pages in various pagings : graphs ; 28 cm.