00731nam a22002292  4500001001300000003000500013005001700018008004100035040001800076086001900094099001900113245008000132246008100212260003100293300000700324500001200331500004400343650002400387710005300411949001800464999001900482hsl001006448DGPO20170826152551.0170112s1969    dcu     r    f000 0 eng d  aGPOcGPOdMvI0 aTD 4.8/2:20-63  aTD 4.8/2:20-6300aAirborne automatic direction finder installations (low & medium frequency).3 aAirborne automatic direction finder installations (low and medium frequency)  a[Washington, D.C.,c1969].  av.  a7/7/69.  aCRDP Program Historic Shelflist record. 0aAids to navigation.1 aUnited States.bFederal Aviation Administration.  aBEVbFed Docs  c264362d264362