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2by Attiga, A.A., Third World Foundation for Social and Economic Studies, London (United Kingdom) eng
Published 1979Texto bibliotecaFAO IT -
3by Attiga, A.A., IFAD, Rome (Italy) eng, Head, I.L., Pineiro, M.E., Rovani, I., Sene, D.
Published 1994Texto bibliotecaFAO IT