About OBARA Hiroshi
About National Inst. of Agro-Environmental Sci. (NIAES), Ibaraki, JPN
About KATO Kunihiko
About HAMAZAKI Tadao
About NAKAI Makoto
About CHANDRACHAI Wanchai
About Dep. of Land Dev., Bangkok, THA
About PATINAVIN Somporn
About Dep. of Land Dev., Bangkok, THA
About SUKCHAN Somsak
About Dep. of Land Dev., Bangkok, THA
About ペドロジスト
About soil classification
About Thailand
About Soil formation(=soil genesis,pedogenesis)and classification
About タイ
About 山林
About 開拓
About 開墾
About 土壌特性
About 分類