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Environmental and economic dilemmas of developing countries. Africa in the twenty-first century Sebsebe Demissew Book Review Pages: 166 - 166
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Preliminary ethnobotanical survey of kurupukari: An amerindian settlement of Central Guyana Mark JohnstonAraminta Colquhoun OriginalPaper Pages: 182 - 194
Ecogeographic distribution ofPhaseolus spp. (Fabaceae) in Bolivia Rosanna FreyreRaúl RíosPaul Gepts OriginalPaper Pages: 195 - 215
Physiological studies and determination of chromosome number in Maca,Lepidium Meyenii (Brassicaceae) Carlos F. QuirosAndrea EppersonMiguel Holle OriginalPaper Pages: 216 - 223
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