Petroleum,
its history, occurrence, production, uses and tests.
By Geo. T. Walker ...
APA Citation
Walker, G. Thompson. (1915). Petroleum: its history, occurrence, production, uses and tests. Minneapolis: Imperial Printing Company.
MLA Citation
Walker, George Thompson. Petroleum: Its History, Occurrence, Production, Uses And Tests. Minneapolis: Imperial Printing Company, 1915.
Warning: These citations may not always be complete (especially for serials).