000 00258nam a22001097a 4500
082 _a621.384 BAB'C
100 _aBABANI, B. B
_958312
245 _aA COMPREHENSIVE RADIO VALVE GUIDE BOOK,5
260 _aLONDON
_bBERNARDS
_c1963
300 _a44P
942 _cBK
999 _c584960
_d584960