3src: https://digitalarchive.tpl.ca/internal/media/dispatcher/1919508/fullAddiction research Drs. William Miles (left) and Wilfred Boothroyd examine belts woven by marijuana smokers in an experiment at the centre. The 30,000(...)3/1/1972Beaty, KeithTSPA_0033467F7601132244259src: https://digitalarchive.tpl.ca/internal/media/dispatcher/1919510/fullDR. W. E. Boothroyd, Half the inmates on drugs3/1/1972Beaty, KeithTSPA_0033468F7601133244260src: https://digitalarchive.tpl.ca/internal/media/dispatcher/1919512/fullWilfred Boothroyd, New breed of users7/26/1973Boothroyd, Wilfred E, DrTSPA_0033469F7601134244261