TY  - BOOK
AU  - Larsen, David R.
TI  - Farm tractors: : 1950-1975
U1  - 631.372 
PY  - 1981///
CY  - St. Joseph, Mich.
PB  - American Society of Agricultural Engineers
KW  - Maquinaria agrícola
KW  - Tractores
ER  -