Kingdom of Thailand, Ministry of National Development, Dept. of Land Development, and Food and Agriculture Organization of the United Nations1973Report / Soil Survey Division
SSR-96
Kingdom of Thailand, Ministry of National Development, Dept. of Land Development, and Food and Agriculture Organization of the United Nations1972Report / Soil Survey Division
SSR-72A
Kingdom of Thailand, Ministry of National Development, Dept. of Land Development, and Food and Agriculture Organization of the United Nations1972Report / Soil Survey Division
SSR-88