Agricultural botany
Gill, N. T.(Norman Thorpe)
Vear, K. C.(Kenneth Charles)
Barnard, D. J.
London Duckworth,
1980
In 6 vols
Previous ed. : in 1 vol. 1966
Bibliography : p.236-238. - Includes index
ISBN 0-7156-1191-7 Pbk : £8.50
Field crops.