RT Journal T1 COuncil on pharmacy and chemistry JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1949 FD June 11 VO 140 IS 6 SP 534 OP 539 DO 10.1001/jama.1949.02900410030008 UL http://dx.doi.org/10.1001/jama.1949.02900410030008 AB