@book{ BA56359592, author = "Pivar, David J.", title = "Purity and hygiene : women, prostitution, and the "American plan," 1900-1930", publisher = "Greenwood Press", year = "2002", series = "Contributions in American history", number = "no. 193", URL = "https://ci.nii.ac.jp/ncid/BA56359592" }