"Tractors--Children's non-fiction" . . . . . . . . "Explains what makes tractors go and how different attachments enable tractors to do different things, from harvesting the fields to plowing snow."@en . . . . . . . . "Juvenile works"@en . . "Big book of tractors" . "Big book of tractors"@en . . "A photo-illustrated exploration of tractors, which covers such topics as the John Deere company's history, a tractor's parts and jobs, how tractors are used with different crops, and compact utility tractors."@en . . . "John Deere big book of tractors"@en . . . . . "Tractors." . . "Deere & Company." . . "traktorer" . . . .