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Aufsatz
Decomposition of and nutrient release from ruminant manure on acid sandy soils in the Sahelian zone of Niger, West Africa

Esse, P. C.; Bürkert, Andreas; Hiernaux, P.; Assa, A. (2001)
Aufsatz
Destructive and non-destructive measurements of residual crop residue and phosphorus effects on growth and composition of herbaceous fallow species in the Sahel

Gérard, B.; Hiernaux, P.; Muehlig-Versen, B.; Bürkert, Andreas (2001)