Shippen, J. M., Basic farm machinery / J. M. Shippen, C. R. Ellin and C. H. Clover - Third edition - Oxford : Pergamon Press, 1980 - x, 288 pages : illustrations ; 25 cm Includes index ISBN: 0080249124 (paperback) Subjects--Topical Terms: Agricultural machinery LC Class. No.: S675 S55