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Tractor
Date Issued: 1987-02-06
Postage Value: 7.1 cents

Commemorative issue
Transportation Series
Tractor

The word "tractor" may first have been applied to steam-powered machines developed in the mid-19th century to pull plows and other farm equipment. They were cumbersome devices that required large operating crews. With the introduction of gasoline engines in the 1890s, the weight of tractors was reduced and mobility was increased. The work tractor is a multi-purpose machine mounted on crawler tracks or rubber tires and providing low-speed tractive power.

Topic: Agriculture (60)  

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