By Chambers, Jonathan David, Mingay, Gordon E.
By Pescod, M.B., Arar, A.
By Youdeowei, Anthony, Service, M. W.
By Rowell, David L.
By Tanner, Gill, Wood, Tim, Murray, Maggie
By Amanda O'Neill
By Piercy, Catherine Nelson
By Bartlett, Richard
By O'Neill, Amanda
By Douglas, James Sholto, Hart, Robert
By Millstone, Erik, Lang, Tim
By Organization for Economic Co-operation and Development
By Gatenby Rm
By collectif
By Newman, Chris
By Verheij, E.
By Verhoef-Verhallen, Esther J.J., Rijis, Aad
By R. Cavallo
By Leeuwis, Cees
By Lemmens, R.H.M.J., Soerianegara, I, Wong, W. C.
By Food and Agriculture Organization of the United Nations
By Reynolds, J.Eric, Reynolds, J.Eric
By Food and Agriculture Organization of the United Nations - FAO
By Dixon, Prof. John, etc.
By Ray, P., Kim-Madslien, Frances, Hart, Barrie, Ewbank
By Louise Brown
By Oldale, Adrienne, Peter