TY  - BOOK
TI  - Automatic control
T2  - A scientific American book
U1  - 629.8 21st ed.
PY  - 1955///
CY  - New York
PB  - Simon and Schuster
KW  - Automatic control
KW  - Automatic control equipment industry
N1  - Bibliography: p. 147-48
ER  -