Note 382 — Chapter XIV · THE ERBIUM AND YTTERBIUM GROUPS—YTTRIUM AND SCANDIUM
Reading edition
Sitzungsber. kaiserl. Akad. Wiss. Wien, 1910, 119, IIa, 18.
[383] Publ. astrophys. Observ. Potsdam, 1909, 20, No. 60.
Reading edition
Sitzungsber. kaiserl. Akad. Wiss. Wien, 1910, 119, IIa, 18.
[383] Publ. astrophys. Observ. Potsdam, 1909, 20, No. 60.