A Methodology for student drug-use surveys 

 - Geneva:  World Health Organization;  1980 
 - Varied pagination. 
 - WHO offset publication No.50, 51, 52, 53, 54, 55, 56, 57, 58 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Youth-drug use<br/>Survey questionnaire - drug abuse<br/>Drug abuse<br/>Oral health<br/>Standardization-antivenom
<br/><br/><label>Dewey Class. No.: </label>616.86  / WOR