Herren, R. V. (2006). Agricultural mechanics: Fundamentals & Applications. Clifton Park, N.Y: Thomson Delmar Lerning.
Dyfyniad Arddull ChicagoHerren, Ray V. Agricultural Mechanics: Fundamentals & Applications. Clifton Park, N.Y: Thomson Delmar Lerning, 2006.
Dyfyniad MLAHerren, Ray V. Agricultural Mechanics: Fundamentals & Applications. Clifton Park, N.Y: Thomson Delmar Lerning, 2006.
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