Wave lengths longer than 5500A in the arc spectra of yttrium, lanthanum, and cerium and the preparation of pure earth elements
By: by C. C. Kiess, associate physicist, Bureau of Standards.  B. S. Hopkins [and] H. C. Kremers, University of Illinois.  October 14, 1921.
Contributors: Hopkins, B. S. b. 1873.; Kremers, Harry Cleveland, 1889-
Series: Scientific papers of the Bureau of Standards,; no. 421
Publisher: Govt. Print. Off.
Published: 1921
Place of publication: Washington
Language: eng
Number of pages: 351
Subjects: Arc spectra.; Yttrium -- Spectra.; Lanthanum -- Spectra.; Cerium -- Spectra.; Rare earths.
Other titles: Arc spectra of yttrium, lanthanum, and cerium.
Notes: Running title: Arc spectra of yttrium, lanthanum, and cerium.