TY  - BOOK
AU  - Gelfenbein, S.P.
TI  - Synthesising automatic control system
U1  - 631.372 G25S 
PY  - 1964///
CY  - Bedford, U.K.
PB  - National Institute of Agricultural Engineering
KW  - TRACTORS -- AUTOMATION
KW  - AGRICULTURAL MACHINERY -- AUTOMATION
ER  -