The Philippine journal of science.
Licence: In copyright
Credit: The Philippine journal of science. Wellcome Collection. Source: Wellcome Collection.
![no text alternative](https://iiif.wellcomecollection.org/image/L0007457/full/800%2C/0/default.jpg)
Licence: In copyright
Credit: The Philippine journal of science. Wellcome Collection. Source: Wellcome Collection.