000 01000pam a2200253 a 4500
999 _c1814
_d1814
005 20210316113737.0
008 920721s1993 nyua bf 001 0 eng
020 _a007040769X
082 0 0 _a621.317
100 1 _aMason, John R.
245 1 0 _aSwitch engineering handbook /
_cJohn R. Mason.
260 _aNew York :
_bMcGraw-Hill,
_cc1993.
300 _a1 v. (various pagings) :
_bill. ;
_c24 cm.
653 _aPhotoelectric Sensors, Proximity Devices, Pushbutton Switches, Membrane Switches
942 _cBK