1. Studies on pollution abatement of wastes from leather industries;Khwaja,1998
2. Treatment of chromic tannery wastes;Kowalski;J. Hazard. Mater.,1994
3. Development of a management wystem to treat wastewater effluent and use clean technology for chromium recovery from EI-Radio and Cairo Tan tanneries;Hafez;US and Egypt Cooperation Project Report No. Env 2-004-044,2000
4. Removal of Chromium from Ion Exchange Reagent Solution;Siegel;EPA Report No. 600/2-83-007,1988