000 00319nam a2200121Ia 4500
008 160710s1955 xx 000 0 und d
082 _a621.384 TER
100 _aHELLIWELL, ROBERT ARTHUR
245 _aELECTRONIC AND RADIO ENGINEERING
260 _bMCGRAW-HILL BOOK CO., INC.
_c1955
300 _a1076
942 _2ddc
_cB
999 _c35247
_d35247