TY  - BOOK
AU  - Japanese Society of Soil Science and Plant Nutrition
TI  - International symposium on distribution, characteristics and utilizationof problem soils : proceedings of a symposium on tropical agriculture research Tsukuba, October 19-26, 1981
T2  - (Tropical agriculture research series; no.15 )
PY  - 1982///
CY  - Tokyo
PB  - Japanese Society of Soil Science and Plant Nutrition
ER  -