Laying out fields for tractor plowing - Kinsman, C. D. (Claude Dennison), 1889-; Reynoldson, L. A. (Le Roy August), 1886-; Reed, I. F. (Irvin Fay), 1903- (Washington, D.C. : U.S. Dept. of Agriculture, 1945)
Original edition, May 1919, by H.R. Tolley. Issued by Office of Farm Management. The present edition revised by I.F. Reed.
Keywords: Plowing