A device for automatic photoelectric control of the analytical gap for emission spectrographs /

Bibliographic Details
Main Authors:	Dietrich, John A., Cooley, Elmo F. (Author), Curry, Kenneth J. (Author)
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Book
Language:	English
Published:	[Reston, Va.] : Dept. of the Interior, Geological Survey ; 1977.
Series:	Geological Survey circular ; 748.
Subjects:	Spectrum analysis > Instruments. Emission spectroscopy. Optoelectronic devices.

Evans: US Documents (Annex 5th floor)