000 00289nam a2200109Ia 4500
008 210901s1971 xx 000 0 eng d
082 _a537.12 OPE
100 _aOpen University press
245 0 _aElectromagnetics and electronic
260 _bOpen University press
_c1971
942 _2ddc
_cBK
999 _c10425
_d10425