RT Article T1 Evidence of discrepant data regarding trends in marijuana use and supply, 1985-1988 JF Journal of psychoactive drugs VO 22 IS 3 SP 319 OP 324 A1 Sidney, Stephen LA English YR 1990 UL https://krimdok.uni-tuebingen.de/Record/1912544369 DO 10.1080/02791072.1990.10472555