000 00253nam a22000977a 4500
082 _a621.381542 ROS'H
100 _aROSEBURY, FRED
_956777
245 _aHANDBOOK OF ELECTRON TUBE ABD VACUME TECHNIQUES
260 _aUSA
_bADDISON WESLEY
_c1965
942 _cBK
999 _c567126
_d567126