Economies et finances (76) Droit (76) Démographie (76) Sociologie (48) Linguistique (2) Education (1)
jeunesse (127) States (127) Youth (127) Youth (127) States (127) surveillance (126) Drug use (126) Monitoring (126) Families (126) Drug utilization (126) Drug abuse (126) Attitudes (126) mode de vie (125) Values (125) Series (125) Lifestyles (125) Questionnaires (124) enquête (123) High school students (117) Social change (115) alcool (114) Alcohol (114) Marijuana (105) Drugs (105) tabac (104) Tranquilizing drugs (104) Tobacco (104) Stimulants (104) Hashish (104) Hallucinogenic plants (104)