DISCUSSION. WATER-SUPPLIES TO THE SMALLER PROVINCIAL TOWNS OF EGYPT. Free

COTTON RESEARCH BOARD OF MINIS.OF AGRIC., WATER SUPPLY, WATER, FILTERS, COSTS, FILTRATION, SEDIMENTATION, TANKS, BACTERIA, CANALS, FLOODS, EXPERIMENTS, RESERVOIRS, SAND, GRAVEL, TREATMENT, COUNTRIES, DEVELOPING, TOWNS, URBAN, NILE RIVER, EGYPT, AFRICA