M0017792: Periodic Chain showing atomic numbers, electrons in orbits, and valencies of the elements, 1950: part 2
- Date:
- March 1960
- Reference:
- WT/D/1/20/1/159/23
Licence: In copyright
Credit: M0017792: Periodic Chain showing atomic numbers, electrons in orbits, and valencies of the elements, 1950: part 2. Source: Wellcome Collection.
