'...a necessary and previously unknown chapter for any future history of drug abuse.'Lenn Evan Goodman, The Middle East Journal, 1974.'...eine der wertvollsten Informationsquellen zum Thema des Hashisch in der islamischen Gesellschaft.'G. Strohmaier, Orientalistische Literaturzeitung, 1977.'...far-reaching and well executed study.'R.B. Serjeant, Bull. of the School of Oriental and African Studies, 1972.'...much useful and otherwise inaccessible information will be welcomed by scholars on many fronts.'Jerry Stannard, Isis, 1972.'...provides a striking picture of the medieval Islamic world's knowledge of and attitudes towards drug use - particularly hashish.'Raymond Prince, Newsletter-Review, 1972.'...solte von jedem Sozialwissenschaftler, der sich mit dem modernen Orient beschäftigt, eingesehen werden.'Wolfgang Slim Freund, Die dritte Welt, 1973.'...Professor Rosenthal is to be thanked for bringing these important medieval documents and discussions to light.'Sami Hamarneh, Pharmacy in History, 1973.