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1
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2Digital revistaSCIELO
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3Journal Contribution bibliotecaUNESCO
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4by Amerasinghe, Felix P., Matsuno, Y., Silva, R.I. de, Piyankarage, Sujeewa C., Bambaradeniya, C.N.B., Mallawatanthri, A.
Published 2002Book Chapter bibliotecaCGIAR