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:
Description
Physical Description:iii, 5 pages : illustrations, diagrams ; 27 cm.
Bibliography:Bibliography: page 5.