الفترة:
Subjects: Khartoum; Sudan; Geographical information systems
Subjects: Remote sensing; Topographic maps
Subjects: Digital electronics; Evaluation; Remote sensing
Subjects: Al-Qadarif; Management; Sudan; Water resources; Drinking water
Subjects: Darfur; Sudan; Data processing; Education; Public health
Subjects: Data processing; Geographical information systems; Geography; Remote sensing