John Deere Publishing has revised four books in the company's line of educational textbooks and guides: Combine Harvesting, Hay and Forage Harvesting, Tillage and Preventive Maintenance. The manuals, which are not specific to John Deere equipment, are part of an educational series that covers agribusiness management practices, agricultural machinery operation and adjustments, and equipment servicing and maintenance. They are designed to help growers at any skill level improve their operations by helping them enhance diagnostic, repair or maintenance procedures.

Prices range from $34.95 to $47.95. For more information, call 800/522-7448, visit www.johndeere.com/publications or www.freeproductinfo.net/fin, or circle 150.