著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) PIETILA T,Dental appearance and orthodontic services assessed by 15-16-year-old adolescents in eastern Finland,Community Dent Health,,,1996,13,,139-144,https://cir.nii.ac.jp/crid/1571417125968455808,