AGS volume 57 issue 3 Cover and Back matter

EDITED BY G. D. H. BELL, B.sc, PH.D., Plant Breeding Institute, Cambridge R. E. EVANS, M.SC, PH.D., School of Agriculture, Cambridge SIR JOHN HAMMOND, C.B.E., M.A., D.SC, F.R.S., School of Agriculture, Cambridge SIR BERNARD KEEN, D.SC, F.R.S., 72 Eaton Square, London, S.W.I SIR E. JOHN RUSSELL, D.SC, F.R.S., Campsfield Wood, Woodstock, Oxon E. W. RUSSELL, C.M.G., M.A., PH.D., F.INST.P., East African Agriculture and Forestry Research Organisation, P.O. Box 21, Kikuyu, Kenya F. YATES, SC.D., F.R.S., Rothamsted Experimental Station, Harpenden