Range:
Subjects: Egypt; Statistics; Air; Pollution
Subjects: Egypt; Statistics; Sanitation; Waste water
Subjects: Egypt; Statistics
Subjects: Egypt; Statistics; Gardens
Subjects: Egypt; Statistics; Nature reserves
Subjects: Iraq; Physical properties
Subjects: Airplanes; Internal combustion engines; Performance
Subjects: Environmental aspects; Groundwater; Organic compounds; Pollution
Subjects: Sanitation; Waste treatment; Waste water; Industries; Pollution
Subjects: Yemen; Groundwater; Quality control
Subjects: Egypt; Sinai peninsula; Groundwater
Subjects: Saudi Arabia; Groundwater; Quality control
Subjects: Artificial satellites; Environmental engineering; Pollution; Measurement; Monitoring
Subjects: Egypt; Management; Water resources; Groundwater
Subjects: Heavy minerals; Iraq; Tigris River; Water; Health aspects
Subjects: Asia; Climatic changes
Subjects: Bahrain; Marine plants; Ecology
Subjects: Egypt; Statistics; Water
Subjects: Internal combustion engines
Subjects: Sanitation; Waste water
Subjects: Chemical engineering; Natural gas
Subjects: Censorship; Electric power systems
Subjects: Iraq; Management; Water resources management; Water supply
Subjects: Nuclear reactors; Radioactive substances
Subjects: Euphrates River; Freshwater fishes; Heavy minerals; Iraq; Ecology
Subjects: Management; Environmental aspects
Subjects: Agricultural chemistry; Pollution; Soil chemistry; Environmental aspects; Soil pollution
Subjects: Water; Groundwater; Prospecting
Subjects: Nigeria; Port Harcourt; Water
Subjects: Acoustic surface waves