Nitrogen balance between animal wastes production, crops and fish ponds demand at commune level in Thai Binh province,A paper about Nitrogen balance between animal wastes production, crops and fish ponds demand at commune level in Thai Binh province have been presented by Dr Tran Duc Toan (NISF) during the "Integrating Livestock-Crop Systems to Meet the Challenges of Globalisation" conference organized by t he British Society of Animal Science and the Animal Husbandry Association of Thailand