Instructions for airway meteorological service.
Edition: Third edition.  1935.
Series: Circular N
Publisher: U.S. Govt. print. off.
Published: 1935
Place of publication: Washington
Language: eng
Number of pages: 142
Subjects: Meteorology -- Observers' manuals.
Notes: At head of title: U. S. Department of agriculture.  Weather bureau.
Earlier editions have title: Instructions for airway observers.