TY  - BOOK
AU  - Tyers, A.
AU  - Miles, R. B.
TI  - Principles of Servomechanisms 
U1  - 629.832 
PY  - 1960///
CY  - London : 
PB  - Pitman, 
KW  - Servomechanisms
N1  - NN
ER  -