Dial (diallylbarbituric acid) : the safest, non-narcotic and non-habit forming hypnotic and sedative.
- Date:
- [between 1920 and 1929?]
Licence: In copyright
Credit: Dial (diallylbarbituric acid) : the safest, non-narcotic and non-habit forming hypnotic and sedative. Source: Wellcome Collection.
