RT Journal T1 COuncil on pharmacy and chemistry JF Journal of the American Medical Association JO Journal of the American Medical Association YR 1939 FD February 4 VO 112 IS 5 SP 431 OP 433 DO 10.1001/jama.1939.02800050045012 UL http://dx.doi.org/10.1001/jama.1939.02800050045012 AB