The base of the skull and foetal skeletons of different ages. Engraving by Benard, late 18th century.
- Alembert, Jean Le Rond d', 1717-1783.
Attribution 4.0 International (CC BY 4.0)
You can use this work for any purpose, including commercial uses, without restriction under copyright law. You should also provide attribution to the original work, source and licence.
Creative Commons Attribution (CC BY 4.0) terms and conditions https://creativecommons.org/licenses/by/4.0