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Signature of Friedrich Tiedemann (b.1781, d.1861), German anatomist & physiologist
Signature of Friedrich Tiedemann (b.1781, d.1861), German anatomist & physiologist
Signature of Hermann Ludwig Ferdinand von Helmholtz (b.1821, d.1894), German physician & physicist
Signature of Hermann Ludwig Ferdinand von Helmholtz (b.1821, d.1894), German physician & physicist
Signature of Hermann Ludwig Ferdinand von Helmholtz (b.1821, d.1894), German physician & physicist
Signature of Hermann Ludwig Ferdinand von Helmholtz (b.1821, d.1894), German physician & physicist