000 00324pam a2200133a 44500
082 _a621.38419
_bG919a
100 _aGrover, John Herbert Hardy
245 1 _aAIRCRAFT COMMUNICATIONS SYSTEMS
260 _aLondon
_bHeywood
_c1958
300 _a127
650 _aRadio In Aeronautics
964 _gCIRC
997 _a3580 s C
999 _c417437
_d417437