United States. Bureau of Mines. (1936). Mining and grinding methods and costs at Clay City Pipe Co. clay mine, Uhrichsville, Ohio. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines. Mining and Grinding Methods and Costs at Clay City Pipe Co. Clay Mine, Uhrichsville, Ohio. [Washington]: [s.n.], 1936.
MLA (9th ed.) CitationUnited States. Bureau of Mines. Mining and Grinding Methods and Costs at Clay City Pipe Co. Clay Mine, Uhrichsville, Ohio. [s.n.], 1936.
Warning: These citations may not always be 100% accurate.