TY  - BOOK
AU  - Davis, Sidney A.
AU  - Ledgerwood, Byron K.
TI  - ELECTROMECHANICAL COMPONENTS FOR SERVOMECHANISMS
U1  - 629.83 
PY  - 1961///
CY  - N. Y.
PB  - Mcgraw-Hill
KW  - Servomechanisms
ER  -