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Oberson, Astrid ,  Nesper, Maike ,  Bünemann, Else K. ,  Fonte, Steven J. ,  Rao, Idupulapati M. ,  Velásquez, Jaime E. ,  Ramírez, Bertha ,  Hegglin, Django ,  Frossard, Emmanuel ,  [Pasture degradation affects forms and distribution of phosphorus in aggregates of tropical soils] ,  Pasture degradation affects forms and distribution of phosphorus in aggregates of tropical soils

Buehler, S. ,  Oberson, Astrid ,  Rao, Idupulapati M. ,  Frossard, Emmanuel ,  [Sequential phosphorus extraction of a 33P labelled soil] ,  Sequential phosphorus extraction of a 33P labelled soil

Friesen, Dennis K. ,  Rao, Idupulapati M. ,  Thomas, Richard J. ,  Oberson, Astrid ,  Sanz Scovino, José Ignacio ,  [Phosphorus acquisition and cycling in crop and pasture systems in low fertility tropical soils] ,  Phosphorus acquisition and cycling in crop and pasture systems in low fertility tropical soils