الفهرس 
acknowledgmentOnly 14 pages are availabe for public view
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Abstract
The present thesis represents the most recent and comprehensive study so far made on the chemistry of Lake Manzalah. It entails 1- results on the physiochemical environment of the lake i.e. temperature, salinity, dissolved oxygen, pH, alkalinity, transparency and suspended mater.
2- nutrient salts i.e. phosphate, nitrate, ammonia and silicate.
3- major ions i.e. sodium, magnesium, calcium, potassium, bicarbonate, carbonate and sulphate.
4- trace elements i.e. Al, Fe, Zn, Cu, Mn, pb, Ni, Cd, and Co in water and surficial sediments.