International Symposium on Distribution, Characteristics and Utilization of Problem Soils Tsukuba, & Nihon Dojo Hiryo Gakkai. (1982). Proceedings of a symposium on tropical agriculture research, Tsukuba, October 19-26, 1981. Japanese Society of Soil Science and Plant Nutrition.
Chicago-Zitierstil (17. Ausg.)International Symposium on Distribution, Characteristics and Utilization of Problem Soils Tsukuba, und Nihon Dojo Hiryo Gakkai. Proceedings of a Symposium on Tropical Agriculture Research, Tsukuba, October 19-26, 1981. Tokyo: Japanese Society of Soil Science and Plant Nutrition, 1982.
MLA-Zitierstil (9. Ausg.)International Symposium on Distribution, Characteristics and Utilization of Problem Soils Tsukuba, und Nihon Dojo Hiryo Gakkai. Proceedings of a Symposium on Tropical Agriculture Research, Tsukuba, October 19-26, 1981. Japanese Society of Soil Science and Plant Nutrition, 1982.