Manual of cloud forms and codes for states of the sky.
Edition: 2d ed.
Series: Its Circular; S, 2d ed
Publisher: U.S. Govt. Print Off.
Published: 1949
Place of publication: Washington
Language: eng
Subjects: Clouds.
Notes: "W. B. no. 1249."
Earlier ed. pub. under title: Codes for cloud forms and states of the sky.