To cite this article: Peter Janik, Michaela Kosticova, Jan Pecenak Prof & Michal Turcek (2017) Categorization of psychoactive substances into “hard drugs” and “soft drugs”: a critical review of terminology used in current scientific literature, The American Journal of Drug and Alcohol Abuse, 43:6, 636-646, DOI: 10.1080/00952990.2017.1335736
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