TY  - BOOK
AU  - Liljedahl, J. B. and others,
TI  - Tractors and their Power Units
SN  - 0471019054
U1  - 631 
PY  - 1979///
CY  - New York
PB  - John Wiley & Sons
KW  - Techniques, equipment & materials
KW  - Tractors
ER  -