Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Matsui Naoyuki,Tokyo Metropolitan Ordinance Regarding the Healthy Development of Youths : Restriction of the Sales of Harmful Books,立教法務研究,2185002X,立教大学大学院法務研究科,2014,7,,297-319,https://cir.nii.ac.jp/crid/1390290699761072384,https://doi.org/10.14992/00009166