The house fly : disease carrier an account of its dangerous activities and of the means of destroying it / by L. O. Howard.
- Howard, L. O. (Leland Ossian), 1857-1950
- Date:
- 1912
Licence: In copyright
Credit: The house fly : disease carrier an account of its dangerous activities and of the means of destroying it / by L. O. Howard. Source: Wellcome Collection.
5/374