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1Digital revistaSCIELO
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2by Peter, T.F., Perry, Brian D., O'Callaghan, C.J., Medley, G.F., Shumba, W., Madzima, W., Burridge, M.J., Mahan, S.M.
Published 1998Conference Paper bibliotecaCGIAR -
3by Peter, T.F., Perry, Brian D., O'Callaghan, C.J., Medley, G.F., Shumba, W., Madzima, W., Burridge, M.J., Mahan, S.M.
Published 1998Journal Article bibliotecaCGIAR