Barnard, Christopher Stephen. Farm planning and control/ eng. C. S. Barnard [and] J. S. Nix. - Cambridge : University Press, 1973. - viii, 549 p.: 24 cm. Bibliography: p. 531-532. ISBN: 0521087384 Subjects--Topical Terms: Farm management.Farm management--Great Britain. Dewey Class. No.: 631 / BAR