تنقيح بحثك
الإتاحة
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المؤلفين
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أنواع المادة
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مواقع
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السلاسل
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أماكن
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مواضيع
- International relati...
- Nile River - Regulat...
- Nile River Watershed
- Petroleum reserves
- Water resources deve...
- Water resources deve...
- Water resources deve...
- Water resources deve...
- Water resources deve...
- Water rights (Intern...
- Water rights - Nile ...
- Water supply - Middl...
- Water-supply
- Water-supply - Manag...
- Water-supply - Manag...
- Water-supply - Nile ...
- Water-supply - Nile ...
- Watershed management
- Watershed management...
- Watershed management...
- أظهر المزيد
- عرض أقل