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
International Symposium on Weak Rock,Engineering property on the weak rock,,[s. n. ],1981,"International Symposium on Weak Rock : soft, fractured, and weathered rock : September 21-24, 1981, Tokyo, Japan",,,,https://cir.nii.ac.jp/crid/1130000797987128960