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Subject
- Drug control95
- History79
- Drug traffic23
- Drug abuse19
- Foreign relations17
- Politics and government11
- Government policy10
- International cooperation10
- Prevention10
- Economic conditions8
- Opium trade8
- Social aspects8
- Cocaine industry7
- United States. Bureau of Narcotics7
- Organized crime6
- Drug addicts5
- Law and legislation5
- Social conditions5
- Drug and Narcotic Control4
- History, 20th Century4