00918cam a2200265 4500 105221329 TxAuBib 20120608120000.0 820719s1983||||||||||||||||||||||||eng|u 82012966 9780896861961 lib. bdg. $7.95 0896861961 lib. bdg. $7.95 9780896862067 pbk. $3.95 0896862062 pbk. $3.95 DLC DLC DLC TxAuBib Sheffer, H. R., 1926- Tractors / by H.R. Sheffer ; edited by Howard Schroeder. Mankato, MN : Crestwood House, 1983. 48 p. : ill. (some col.) ; 23 cm. Movin' on Introduces the wheeled and crawler tractors, explains how they work, and details their contribution to industry and agriculture. Tractors Juvenile literature. Tractors. Schroeder, Howard. Movin' on.