TY  - BOOK
AU  - Liljedahl, John B.
AU  - Barger, Edgar Lee,
TI  - Tractors and their power units
AV  - TL233 T72 1979
PY  - 1979///
CY  - New York
PB  - J. Wiley
KW  - Tractores
N1  - First-2d. ed. by e. l. barger and others
ER  -