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 "Burns, Linda Claire",Vagueness : an investigation into natural languages and the sorites paradox,,Kluwer Academic Publishers,1991,Reason and argument,,0792314891,,https://cir.nii.ac.jp/crid/1130282268709665792