Carbon and nitrogen budgets in shrimp ponds of extensive shrimp pond-mangrove forestry farms in the Mekong delta, Vietnam: Alongi DM, Johnston DJ and Xuan TT (2000) Carbon and nitrogen budgets in shrimp ponds of extensive shrimp pond-mangrove forestry farms in the Mekong delta, Vietnam. Aquaculture Research 31: 387-399.