Rwigema JB., Van den Berghe CH., Mujawayezu AM., Sota P. —
Interaction between enriched farmyard manure with fertilizers, lime and different phosphorus sources obtained from the phosphatic rock from Matongo on a ferralitic soil from the region of Bututsi (Burundi) (Text in French),
p. 61-66. vol. 11 no 2
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