000 00318nam a2200121Ia 4500
008 211209s1970 xx 000 0 und d
020 _a592059766
041 _aeng
100 _aBALL,A M
245 _aRADIO VALVE AND TRANSISTOR DATA
260 _aLONDON
_bBUTTERWART AND CO. PUBLISHERS LTD.
_c1970
300 _aII + 232
999 _c99018
_d99018