Hawker, M. F. J. Horticultural machinery / M.F.J. Hawker and J.F. Keenlyside. - 3rd ed. - Harlow Longman scientific and technical. 1985. - x, 180 p. : ill. ; Pbk. Includes index. ISBN: 0582408075 (pbk.) : Subjects--Topical Terms: Horticultural machinery. LC Class. No.: S678.7.H38 / 1985