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MLA

Clark, W. Mansfield, United States Bureau of Animal Industry, and United States Department of Agriculture. A humidity regulator . U.S. Dept. of Agriculture, Bureau of Animal Industry, 1913.

APA

Clark, W. Mansfield, United States Bureau of Animal Industry, and United States Department of Agriculture. (1913). A humidity regulator. U.S. Dept. of Agriculture, Bureau of Animal Industry.

Chicago

Clark, W. Mansfield, United States Bureau of Animal Industry, and United States Department of Agriculture. A humidity regulator . U.S. Dept. of Agriculture, Bureau of Animal Industry, 1913.