01086cam a22003011 4500 agr32000046 DLC 20260227110951.0 840720s1932 dcua f000 0 eng c agr32000046 (OCoLC)10968973 U.S. Dept of Agr. Library AMAU DLC premarc TL556 .U6 1932 629.1324 United States. Weather Bureau. Instructions for airways observers ... <2d ed.> 1932. Washington, U.S. Govt. Print., 1932. ix, 70 p. incl. illus., tables, diagrs. 24 cm. Its Circular N, Aerological division At head of title: W.B. no. 1059. United States. Dept. of Agriculture. Weather Bureau. Third edition, 1935, has title: Instructions for airway meteorological service. Meteorology Observers' manuals. Meteorology in aeronautics. Airways observers. United States. Weather Bureau. Circular N, Aerological division. 9460 9460