000 00304nam a2200121Ia 4500
008 210901s1971 xx 000 0 eng d
082 _a537.5 OPE
100 _aOpen University
245 0 _aElectromagnetics and electronics
260 _bOpen University press
_c1971
300 _a43p.
942 _2ddc
_cBK
999 _c10429
_d10429