TY  - BOOK
AU  - Liljedahl,John B.
AU  - Barger,E.L.
TI  - Tractors and their power units
U1  - 629.22 
PY  - 1979///
CY  - New York
PB  - Wiley
N1  - First-2d ed. by E. L. Berger, and others
ER  -