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Kunakorn Boonsai. (1998) Treatment of effluent from pig manure biogas digester by aquatic plants in natural wetland . Chiang Mai University/Chiang Mai.
Kunakorn Boonsai. Treatment of effluent from pig manure biogas digester by aquatic plants in natural wetland. . Chiang Mai:Chiang Mai University, 1998.
Kunakorn Boonsai. (1998) Treatment of effluent from pig manure biogas digester by aquatic plants in natural wetland . Chiang Mai University/Chiang Mai.