The analgesic properties of certain drugs and drug combinations

[1] SMITH DL, 1941, J PHARMACOL EXP THER, V72, P74

[2] Studies on pain. Measurement of the effect of morphine, codeine and other opiates on the pain threshold and an analysis of their relation to the pain experience [J]. JOURNAL OF CLINICAL INVESTIGATION, 1940, 19 (04) : 659 - 680

[1] SMITH DL, 1941, J PHARMACOL EXP THER, V72, P74

[2] Studies on pain. Measurement of the effect of morphine, codeine and other opiates on the pain threshold and an analysis of their relation to the pain experience [J]. JOURNAL OF CLINICAL INVESTIGATION, 1940, 19 (04) : 659 - 680