"Wave lengths in the spectra of the vacuum copper arc." WITH: "Wave lengths in the spectra of the vacuum copper arc."
Extract from:
by BURNS, Keivin & Francis M. WALTERS, Jr.
Extract from:: Publications of the Allegheny Observatory of the University of Pittsburgh, Vol. VIII, No. 3.. 4to. 27-35; 37-38 pp. Tables. Self-wraps. Good. (Inventory #: S5841)