Bui Xuan Men 2012 Use of coconut meal as replacement for protein in diets of growing ducklings raised in a biosecure duck-fish system on smallholdings in the Mekong Delta. Proceedings of the International Conference "Livestock-Based Farming Systems, Renewable  Resources and the Environment", 6-9 June 2012, Dalat, Vietnam (Editors: Reg Preston and Sisomphone Southavong) http:/www.mekarn.org/workshops/dalat2012/html/bxmen.ctu1.htm