@article{oai:kochi.repo.nii.ac.jp:00001643, author = {Jaruntorn, BOONYANUPHAP and Katsutoshi, SAKURAI and Sota, TANAKA}, issue = {3}, journal = {熱帯研究, Tropics}, month = {Jan}, note = {application/pdf}, pages = {215--231}, title = {Soil nutrient status under upland farming practice in the Lower Northern Thailand.}, volume = {16}, year = {2007} }