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GĂ©rard, B and Hiernaux, P and Muehlig-Versen, B and Buerkert, A (2001) Destructive and non-destructive measurements of residual crop residue and phosphorus effects on growth and composition of herbaceous fallow species in the Sahel. Plant and Soil, 228 (2). pp. 265-273. ISSN 0032-079X