Observatório Europeu da Droga e da Toxicodependência
An overview of cannabis potency in Europe / European Monitoring Centre for Drugs and Drug Addiction . - Luxembourg : Office for Official Publications of the European Communities, 2004 . - 71 p. : il. color . - (EMCDDA insights series , 1606-1683 ; 6)



ISBN 92-9168-184-9 (brochado).

Canábis--Consumo--Europa