RT Journal Article SR Electronic T1 ON THE COMPARATIVE EFFECTS OF THE OPIUM ALKALOIDS INDIVIDUALLY AND IN COMBINATION WITH EACH OTHER ON THE GALL BLADDER JF Journal of Pharmacology and Experimental Therapeutics JO J Pharmacol Exp Ther FD American Society for Pharmacology and Experimental Therapeutics SP 473 OP 481 VO 9 IS 8 A1 DAVID I. MACHT YR 1917 UL http://jpet.aspetjournals.org/content/9/8/473.abstract AB