Calcagno, Peter T.; Walker, Douglas M.; Jackson, John D. (January 2010). "Factors determining the likelihood and timing of the legalization of commercial <a href=https://www.roppongibiyoushitsu.co.jp/beautyplus_20160326215124_save-1/>https://www.roppongibiyoushitsu.co.jp/beautyplus_20160326215124_save-1/</ in United States".