By E. Owen, A. Kitalyi, N. Jayasuirya, T. Smith
By Neville, Jayne
By Sonia Kurta
By Brewis Henry
By Mike Darton, Jim Buckland
By Peter Wright
By Jennifer Thomson
By gestalten, Martin Raymond, Chris Sanderson, Future Laboratory
By Verheij, E.
By Moore, H.M., Fox, H.R., Elliott, S.
By R. Cavallo
By Food and Agriculture Organization of the United Nations
By Withers, Bruce, Vipond, Stanley
By Smil, Vaclav
By Bessire, Lucas
By Ableman, Michael
By Bowden, Rob
By Dahl, Einar, Støttrup, Josianne, Moksness, Erlend
By Martín Arboleda
By Margaret Redfern, R.R. Askew
By Coulter, Jim, etc.
By Jones, Kevin C, Beck, Angus J, Hayes, Michael H B
By Spencer, Sarah