Statistics on psyehotropic substances for 1978. 

 - New York  U.N.           1979 
 - xi; 89p.  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>V1N45,93:3 (Y:414).N78, L9/UN