School hygiene / by Ludwig Kotelmann ; translation from a copy revised and enlarged especially for this edition by the author / by John A Bergström and Edward Conradi.
- Kotelmann, L. (Ludwig Wilhelm Johannes), 1839-1908.
- Date:
- 1899
Licence: Public Domain Mark
Credit: School hygiene / by Ludwig Kotelmann ; translation from a copy revised and enlarged especially for this edition by the author / by John A Bergström and Edward Conradi. Source: Wellcome Collection.
5/432