By Thomas J. Bassett (University of Illinois, Urbana-Champaign)
By Andrea Wulf
By National Research Council, Division on Earth and Life Studies, Board on Agriculture and Natural Resources, Committee on Animal Nutrition, Subcommittee on Dog and Cat Nutrition
By James R Simpson, Phylo Evangelou
By Orla Ryan
By G. Webster, H.A. Osmaston
By Leggat, George, Beaton, Arnold, Lang Brown, James, Osmaston, Henry
By P. Murphy
By Royal Horticultural Society, Sara Draycott
By Mutch, WILLIAM
By Karen Bush, Claire Colvin
By Helmut F. van Emden (University of Reading)
By John R. August BVetMed MS MRCVS
By James Herriot
By Thear, Katie
By Horst Marschner (Universitat of Hohenheim, Germany)
By John R. Archer
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 IAEA