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Mohammed Osman El Sammani has written:

'The magnitude of the drinking water problem in the Sudan' -- subject(s): Drinking water, Water-supply

'The existing services in Kongor and Bor districts' -- subject(s): Rural Social service, Rural development

'Jonglei Canal' -- subject(s): Dinka (African people), Economic conditions, Jonglei Project, Rural development, Social conditions

'A study of central villages and their served envelopes as lower order planning units for rural development in the Sudan' -- subject(s): Rural conditions, Villages

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10y ago

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