A device for automatic photoelectric control of the analytical gap for emission spectrographs /
| Main Authors: | , , |
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| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
[Reston, Va.] :
Dept. of the Interior, Geological Survey ;
1977.
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| Series: | Geological Survey circular ;
748. |
| Subjects: |
| Physical Description: | iii, 5 pages : illustrations, diagrams ; 27 cm. |
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| Bibliography: | Bibliography: page 5. |