A manual of hygiene and sanitation / by Seneca Egbert.
- Egbert, Seneca, 1863-1939.
- Date:
- 1926
Licence: In copyright
Credit: A manual of hygiene and sanitation / by Seneca Egbert. Source: Wellcome Collection.
43/626 (page 45)
Licence: In copyright
Credit: A manual of hygiene and sanitation / by Seneca Egbert. Source: Wellcome Collection.