Items where Author is "Hellegers, P.J.G.J."

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The role of rainfed agriculture in securing food production in the Nile Basin. Siderius, C. and Van Walsum, P.E.V. and Roest, C.W.J. and Smit, A.A.M.F.R. and Hellegers, P.J.G.J. and Kabat, P. and Van Ierland, E.C.