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Photometrie der sichtbaren Lichtstrahlen mit lichtempfindlichen Leukobasen organischer farbstoffe Sowie mit Chlorsilber- und Chromatpapier

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Photometrie der sichtbaren Lichtstrahlen mit lichtempfindlichen Leukobasen organischer farbstoffe Sowie mit Chlorsilber- und Chromatpapier

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Subjects

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