TY  - BOOK
AU  - Mason,John R.
TI  - Switch engineering handbook
SN  - 007040769X
U1  - 621.317 
PY  - 1993///
CY  - New York
PB  - McGraw-Hill
KW  - Photoelectric Sensors, Proximity Devices, Pushbutton Switches, Membrane Switches
ER  -