000 00328nam a2200133Ia 4500
008 210901s1958 xx 000 0 eng d
082 _a621.381 RAT
100 _aRatcliffe, J.A.
245 4 _aThe physical principles of wireless
260 _aLondon
_bMethuen
_c1958
300 _a109
650 _aEngineering
942 _2ddc
_cBK
999 _c7963
_d7963