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Ahmad and others. 1981. Land application of pulp and paper mill effluent. , Asian Institute of Technology;
Ahmad and others. (1981) Land application of pulp and paper mill effluent . Asian Institute of Technology/Bangkok.
Ahmad and others. Land application of pulp and paper mill effluent. . Bangkok:Asian Institute of Technology, 1981.
Ahmad and others. (1981) Land application of pulp and paper mill effluent . Asian Institute of Technology/Bangkok.