Instructions for airway meteorological service.
Edition: <5th ed.> 1941.  (Effective Nov. 1, 1941)
Series: U. S.  Weather bureau.  Circular N
Publisher: U.S. Govt. print. off.
Published: 1941
Place of publication: Washington
Language: eng
Number of pages: 201
Subjects: Meteorology -- Observers' manuals.
Other titles: Airway meteorological service.
Notes: At head of title:  U. S.  Department of commerce.  Weather bureau.