TY  - BOOK
AU  - Larsen,Lester
TI  - Farm tractors, 1950-1975
U1  - 629.2 
PY  - 1981///
CY  - St. Joseph, Mich
PB  - American Society of Agricultural Engineers
KW  - Farm tractors
KW  - United States
KW  - History
ER  -