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By "U. S. Weather Bureau. "
Codes for cloud forms and states of the sky according to the international system of classification. Prepared by the Weather bureau Committee on clouds and cloud forms: Ivan R. Tannehill, chairman, Horace R. Byers, Edgar B. Calvert [and others]
By: U. S. Weather Bureau.
Publication info: Washington,U.S. Govt. print off.,1938.
Contributed by: MBLWHOI Library