Science finds one meaning in it in the. 18th Century, another in the 19th, a third in the 20th; each. artist finds unique meanings on other levels of abstraction; and. each man and woman finds different meanings at different. hours of the day, depending on the internal and external.
1 Drug Screening.org, a confidential online screening quiz to assess drug use.  NIDA-Modified Alcohol, Smoking, and Substance Involvement Screening Test (NMASSIST), Online and Printed Screening tool, resource guide, quick reference guide and patient postcard.
Psychoactive Drugs and Their Classifications. A PowerPoint presentation (no narration) containing some of this information is. available at the below web page. Viewers who have PowerPoint software installed on. their computers can view the actual PowerPoint presentation (look for the drugs.ppt. and indiv_drugs files), or those without PowerPoint can view the information as a. webpage, but only with MS Explorer 4.0 or above (look for drugs.mht and. indiv_drugs files).