APA (7th ed.) Citation

United States. Bureau of Mines. (1938). Dust sampling with Bureau of Mines midget impinger, using new hand--operated pump. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Mines. Dust Sampling with Bureau of Mines Midget Impinger, Using New Hand--operated Pump. [Washington]: [s.n.], 1938.

MLA (9th ed.) Citation

United States. Bureau of Mines. Dust Sampling with Bureau of Mines Midget Impinger, Using New Hand--operated Pump. [s.n.], 1938.

Warning: These citations may not always be 100% accurate.