http://www.drugabuse.gov/infofacts/Infofaxindex.html

http://www.teens.drugabuse.gov/

http://drugabuse.gov/ReasearchReports?Marijuana/default.htm

http://www.freevibe.com

http://www.drugabuse.gov/MOM/MOMIndex.html

http://health.nih.gov/result.asp/424/21

http://health.nih.gov/search.asp/21

http://health.nih.gov   (Scroll down; click on substance abuse)

http://www.nih.gov/

http://medlineplus.gov/