@techreport{oai:nagoya.repo.nii.ac.jp:00031360,
 author = {YOKOYAMA, Satoshi and 横山, 智},
 month = {Sep},
 note = {Official Research Report of Asian Studies Program in fiscal year 2000, Ministry of Education, Culture, Sports, Science and Technology, Japan},
 title = {The Livelihood System of the Population of a Mountainous Area in Northern Laos: A Case Study of Ngoi District, Luang Phabang Province},
 year = {2002}
}