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-- See Also the narrower term Farm engines

-- See Also the narrower term Free piston engines

-- See Also the narrower term Heat-engines

-- See Also the narrower term Internal combustion engines

-- See Also the narrower term Locomotives

-- See Also the narrower term Motors

--subdivision Motors under subjects, e.g. Automobiles--Motors; Models and modelmaking--Motors

-- See Also the narrower term Pumping machinery

-- See Also the narrower term Solar engines

-- See Also the narrower term Steam-boilers

-- See Also the narrower term Steam-engines

--individual parts, e.g. Governors (Steam-engine); Pistons; Slide-valves

-- See Also the narrower term Traction-engines

-- See Also the narrower term Tractors

--headings beginning with the word Tractor

-- See Also the narrower term Turbines