@article{oai:ir.ide.go.jp:00029904,
 author = {Alberto, Rivera & Jose Arrueta},
 issue = {4},
 journal = {ラテンアメリカレポート},
 month = {Dec},
 note = {PJa/33/Ra2},
 pages = {28--33},
 title = {ボリビア：チャパレ地方のコカ経済},
 volume = {7},
 year = {1990}
}