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Controlled substance - Wikipedia
What Is a Controlled Substance? Schedule, List, Types - Healthline
The Controlled Substances Act - DEA.gov
Diversion Control Division | Controlled Substance Schedules
Controlled Substances & CSA Schedule Lists - Drugs.com
Drug Scheduling - DEA.gov
The Controlled Substances Act
Controlled Substance Schedules - StatPearls - NCBI Bookshelf
DEA Diversion Control Division
Overview of Controlled Substances | National Institute of Justice