By Marilyn Edwards
By Arthur Ingram
By Iain R. Thomson
By Sue Minter, H.R.H. Duke of Edinburgh
By Jonathan Crush
By John Moore, Christopher Davis
By Alan Major
By David Bland
By Thompson, Alan, Goodchild, Claude
By Katie Thear
By Case, Andy
By Dave Holderread
By Thear, Katie
By Jeremy J C Hobson
By IAEA
By G. W. Cooke
By T. J. Marshall, J. W. Holmes
By Maurice Bonneau, Bernard Souchier, V.C. Farmer
By Cobbett, WILLIAM, Chesterton, G. K.
By D.A. Cooke, R.K. Scott
By Great Britain: Agricultural, Development and Advisory Service, Great Britain: Ministry of Agriculture, Fisheries and Food
By Albert L. Smit, A.G. Bengough, Chris Engels, M. Van Noordwijk, S. Pellerin
By Jim Waller (CABI Egham, Surrey, UK), Jillian Lenne (Consultant in Agricultural Research and Development, UK and Editor in Chief, Field Crops Research), Sarah Waller
By J. S. Nix
By D. Britton
By Milthorpe, F
By D.S. Jenkinson, K.A. Smith
By Benbow, Steve
By Sue Colledge, James Conolly
By Gordon Conway