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 Organisation for Economic Co-operation and Development,Roadside obstacles : their effects on the frequency and severity of accidents : development and evaluation of countermeasures : a report,,Organisation for Economic Co-operation and Development,1975,Road research,,9264113924,,https://cir.nii.ac.jp/crid/1130282270112805248