Monitoring the future , national survey results on drug use, 1975 - 2002, Vol. 2, College students & adults ages 19 - 40, 2002. 

 - Health and Human Services Deptment - - Public Health Service  September 2003 
<br/><br/> Paper 
<br/><br/><label>GPO Item No.: </label>0467-A-32 
<br/><br/><label>Gov. Doc. Class. No.: </label>HE 20.3968 : 975 - -2002