TY  - BOOK
AU  - Jacobs, Clinton O  .
AU  - Harrell,William R  .
TI  - Agricultural power and machinery / 
SN  - 0  07  032210  4
U1  - 631.3 
PY  - 1982///
CY  - New York : 
PB  - McGraw Hill Book Company , 
ER  -