000 00309nam a2200121Ia 4500
008 211209s1971 xx 000 0 und d
041 _aeng
082 _aSEC
100 _aSECLY S
245 _aRADIO ELECTRONICS
260 _aNEW YORK
_bMCGRAW-HILL KOGAKUSHA INTERNATIONAL STUDENT EDITION
_c1971
300 _a495
999 _c5910
_d5910