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2
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Idfina barrage [graphic].
- 624.20962
- Ministry of public works,
- 1947]
- [Cairo :
-
Veveno Pibor diversion scheme : Bahr-el-Gebel banking scheme : Jonglei Canal diversion scheme.
- 627.52
- Ministry of public works,
- 1938.
- [Cairo] :