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5The economics of afforestation: a case study in Africa The economics of afforestation: a case study in Africaby Anderson, D. 171593
Published 1987Texto bibliotecaFAO IT -
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7Texto bibliotecaUBA
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17The future prospects for gum arabic; the exudate from Acacia senegal (L.) Willd. and related speciesby 42696 ANDERSON, D.M.W.
Published 1987bibliotecaIICA -
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19Digital revistaSCIELO
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