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- Concluding Remarks(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )
- Cropping Systems to Preserve Fertility of Red-Yellow Podzolic Soils in Indonesia(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )
- Micronutrient Problems in Upland Soils in Indonesia(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )
- Improvement and Fertilization of Acid Sulfate Soils in Thailand(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )
- Problems of Utilization and Management of Some Important Great Soil Groups in Sri Lanka(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )
- Distribution, Characteristics and Utilization of Problem Soils in Thailand(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )
- Efficient Level of Phosphorus Fertility in Paddy Soils(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )
- Improvement and Management of Peat Soils in Japan(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )
- Capability Considerations for Tropical Soils(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )
- Some Characteristics of Andosols in Japan(Tropical agriculture research series : proceedings of a symposium on tropical agriculture researches )