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000362 - Clark University
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ETMA program Sudan : environmental monitoring baseline and trend analysis reports, (8): lower river, Atabara area (Nile province), an assessment from 1984 PN-AAY-797
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000362 - Clark University
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Environmental indicators and trends in Tegali District : a case study of a tropical montane, base-line survey (1984), an other usaid supported study/document from 1984 PN-AAY-801
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000362 - Clark University
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Base line data and potential, physical, chemical and biological indicators, study area : Blue Nile River, Khartoum - Sennar stretch, an assessment from 1984 PN-AAY-802