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224Texto bibliotecaUBA
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230conference_item bibliotecaUNESCO
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231Digital revistaSCIELO
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232Digital revistaSCIELO
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233Digital revistaSCIELO
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234Digital revistaSCIELO
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235Digital revistaSCIELO
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236Texto bibliotecaECOSUR
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237Digital revistaSCIELO
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239Natural resources and rural development in arid lands: case studies from Sudan Natural resources and rural development in arid lands: case studies from Sudanby Davies, H.R.J. (ed.)
Published 1985Texto bibliotecaFAO IT -
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