Observations on the rare earths
Subtitle: the purification of erbium, with special reference to the separation from yttrium; the atomic weight of erbium
By: by Edward Wichers.
Publisher: Eschenbach Printing Co.
Published: 1919
Place of publication: Easton, Pa
Language: eng
Number of pages: 17
Subjects: Rare earths.
Notes: Includes bibliographical references.
Thesis (Ph. D.)--University of Illinois, 1917.