United States. Bureau of Mines. (1936). Quarrying and crushing methods and costs at Plainville, Conn., trapƯrock quarry of New Haven Trap Rock Co., New Britain, Conn. [s.n.].
Chicago Style (17th ed.) CitationUnited States. Bureau of Mines. Quarrying and Crushing Methods and Costs at Plainville, Conn., TrapƯrock Quarry of New Haven Trap Rock Co., New Britain, Conn. [Washington]: [s.n.], 1936.
MLA (9th ed.) CitationUnited States. Bureau of Mines. Quarrying and Crushing Methods and Costs at Plainville, Conn., TrapƯrock Quarry of New Haven Trap Rock Co., New Britain, Conn. [s.n.], 1936.
Warning: These citations may not always be 100% accurate.