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 Annual Meeting. Highway Research Board,"Flexible culverts under high fills : presented at the 34th annual meeting, Jan. 11 - 14, 1955",,Highway Research Board,1956,Bulletin,,,,https://cir.nii.ac.jp/crid/1130000797031855872