Harris, Anthony George. Farm machinery / A. G. Harris, T. B. Muckle, J. A. Shaw. - 2nd ed. - Oxford : Oxford University Press, 1974, repr. (with correction s) 1984 - 280 p. : ill. ; 21 cm. ISBN: 0198594410 Subjects--Topical Terms: Agricultural machinery.-------- Dewey Class. No.: 631.28 HAR