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NATO Advanced Research Workshop on Hydrological Stochastic Models of Processes and their Applications in Problems of Environmental Preservation (1998 : Moscow, Russia), Bolgov, Mikhail V.

International Specialized Conference on Membrane Technology in Environmental Management (1999 : Tokyo, Japan), The International Association of Water Quality, Japan Society on Water Environment

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International Conference on Environment and Development (1994 : Kuala Lumpur), Sa'ari Mustapha, Maketab Mohamed, Mohd. Rozainee Taib, Mohammad Khoshnoodi

Chowdhury, Robin N., Sivakumar, M, International Conference on Environmental Management : Geo-Water and Engineering Aspects (1993 : Wollongong, Australia)

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