著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL
United Nations. Dept. of Economic and Social Affairs. Resources and Transport Division and United Nations. Dept. of Economic and Social Affairs,Small-scale mining in the developing countries,,United Nations,1972,Document,,,,https://cir.nii.ac.jp/crid/1130282268739785344