00882cam a22002531  4500001001300000003000400013005001700017008004100034010001700075035001900092040002500111042001200136050002000148110008700168245005200255250002600307260004800333300004000381490001500421500007200436500006800508650003700576999001500613agr35000214 DLC20260227110954.0750610s1935    xx            000 0 eng    aagr35000214   a(OCoLC)1382744  aDLCcDSIdOCoLCdDLC  apremarc00aTL556b.U6 19351 aUnited States.bDepartment of Agriculture.bWeather bureau.bAerological division.10aInstructions for airway meteorological service.  aThird edition.  1935.  aWashington,bU.S. Govt. print. off.,c1935.  avi, 142 p.billus., diagrs.c24 cm.0 aCircular N  aAt head of title: U. S. Department of agriculture.  Weather bureau.  aEarlier editions have title: Instructions for airway observers. 0aMeteorologyxObservers' manuals.  c9660d9660