The control of diphtheria and scarlet fever / by R.A. O'Brien.
- O'Brien, Richard Alfred, 1878-1970.
- Date:
- [1928?]
Licence: In copyright
Credit: The control of diphtheria and scarlet fever / by R.A. O'Brien. Source: Wellcome Collection.
7/10 (page 7)
Licence: In copyright
Credit: The control of diphtheria and scarlet fever / by R.A. O'Brien. Source: Wellcome Collection.