By Nigel Boatman
By Lockhart, J. A. R., Wiseman, A. J. L.
By Technical Centre for Agriculture
By Schjonning, Per, Christensen, Bent, Elmholt, Susanne
By Acquaah, George
By Walker, Dr Thomas S., Alwang, Jeffrey
By Bajaj, Y. P. S.
By Davis, D. Layten, Nielsen, Mark T.
By Tuteja, Narendra, Gill, Sarvajeet S., Tiburcio, Antonio F., Renu
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By Lugtenberg, Ben
By Bationo, Andre, Waswa, Boaz, Kihara, Job, Adolwa, Ivan, Vanlauwe, Bernard, Saidou, Koala
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By Kihara, Job, Fatondji, Dougbedji, Jones, James W, Hoogenboom, Gerrit, Tabo, Ramadjita, Bationo, Andre
By Joseph De Vries
By Prabhu Pingali, Mahabub Hossain, Roberta Gerpacio
By Kiss, Agnes, Meerman, Frans
By Grant Isaac
By Taylor, David, Taylor, Yvonne, McCosker, Helen
By Tudge