00531cam a2200205 4500 547824230 TxAuBib 20170802120000.0 170801s2007||||||||||||||||||||||||und|u 9780978849634 0978849639 TxAuBib Steers, Billy. Tractor Mac You're a Winner. Roxbury, CT : Tractor Mac Inc., 2007. unp. Tractor Mac 20170802. Tractor Mac.