TY  - BOOK
ED  - International Symposium on Distribution, Characteristics and Utilization of Problem Soils
ED  - Nihon Dojo Hiryo Gakkai.
TI  - Proceedings of a symposium on tropical agriculture research, Tsukuba, October 19-26, 1981
PY  - 1982///
CY  - Tokyo
PB  - Japanese Society of Soil Science and Plant Nutrition
KW  - Soils
ER  -