tractors

n.

a wheeled vehicle with large wheels; used in farming and other applications

a truck that has a cab but no body; used for pulling large trailers or vans

Robot tractors
Tractors and their power units. 3d ed.
Standard Tractors and the Conformal Ambient Metric Construction
Of tractors and men: masculinity, technology and power in a French farming community
Carbon dioxide emissions associated with the manufacturing of tractors and farm machinery in Canada
The effect of urban refuse compost and different tractors tyres on soil physical properties, soil erosion and maize yield
Development and Evaluation of a Semi-active Suspension System for Full Suspension Tractors
Whole-body vibration: Evaluation of emission and exposure levels arising from agricultural tractors
Binswanger, Hans P. The Economics of Tractors in South Asia—An Analytical Review. New York: Agricultural Development Council, and H...
Changes of some physical properties of a clay soil following passage of rubber- and metal-tracked tractors