Institution: | 1. Natural and Social Science Interface (NSSI), Institute for Environmental Decisions (IED), Swiss Federal Institute of Technology Zurich, CH-8092 Zurich, Switzerland;2. Center for Development Research (ZEF), University of Bonn, Walter-Flex-Str.3, D-53113 Bonn, Germany;3. Soils and Fertilizers Research Institute (SFRI), Dong Ngac, Tu Liem, Hanoi, Viet Nam |