Luu Huu Manh*, Nguyen Nhut Xuan Dung, Nguyen Dang Tuan and Bui Thi Le Minh 2009 Evaluation of method for treating pig waste by applying a model of a fish pond, followed a water-hyacinth pond in Vinh Khanh State Farm, An Giang Province/  International Conference on Livestock, Climate Change and the Environment, An Giang University, Vietnam, 16-18 October 2009  (Editors: Reg Preston and Brian Ogle). httm://www.mekarn.org/workshops/environ/proenv/mahn.htm