Pocket companion for engineers, architects and builders :
containing useful information and tables appertaining to the use of steel.
APA Citation
Carnegie Steel Company. (1919). Pocket companion for engineers, architects and builders: containing useful information and tables appertaining to the use of steel. [20th ed.] Pittsburgh: Carnegie Steel Company.
MLA Citation
Carnegie Steel Company. Pocket Companion for Engineers, Architects And Builders: Containing Useful Information And Tables Appertaining to the Use of Steel. [20th ed.] Pittsburgh: Carnegie Steel Company, 1919.
Warning: These citations may not always be complete (especially for serials).