TY  - BOOK
AU  - Porter,Arthur
TI  - Introduction to servomechanisms
U1  - 629.83 
PY  - 1961///
CY  - London
PB  - Methuen
KW  - Systems engineering
KW  - System analysis
KW  - Automatic control
KW  - Servomechanisms
N1  - Includes bibliographical references and index
ER  -