Codes for cloud forms and states of the sky according to the international system of classification.
Subtitle: Prepared by the Weather bureau Committee on clouds and cloud forms
By: Ivan R. Tannehill, chairman, Horace R. Byers, Edgar B. Calvert [and others]
Series: Its Circular S.
Publisher: U.S. Govt. print off.
Published: 1938
Place of publication: Washington
Language: eng
Number of pages: 100
Subjects: Clouds
Notes: At head of title: W.B. no. 1249. U.S. Department of agriculture.   Weather bureau.