ebrary, Inc. (2001). How to develop and implement a national drug policy (2nd ed.). World Health Organization.
Citace podle Chicago (17th ed.)ebrary, Inc. How to Develop and Implement a National Drug Policy. 2nd ed. Geneva: World Health Organization, 2001.
Citace podle MLA (9th ed.)ebrary, Inc. How to Develop and Implement a National Drug Policy. 2nd ed. World Health Organization, 2001.
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