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Fundamental principles and constructional parts of photometers.
Helligkeitsmesser (Photometer)
Helligkeitsmesser (Photometer)
Sewig, R. (author)
1932
Bibliography
Article (Journal)
German
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Engineering Index Backfile | 1916
|Continuously working Photometer
British Library Online Contents | 1997
|Kontinuierlich arbeitende Photometer
British Library Online Contents | 1997
|Modification of Rayleigh photometer
Engineering Index Backfile | 1925
|