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Subjects
- Color photography -- Research[remove]2
- Drawings (visual works)2
- Photographic prints2
- Photography, Stereoscopic2
- 35mm (photographic film size)1
- Audio amplifiers1
- Broadcasting1
- Chemistry, Technical1
- Chemists1
- Clippings (Information Artifacts)1
- College teachers1
- Color motion pictures1
- Color photography -- Films1
- Correspondence1
- Diaries1
- Eidophor system1
- Electrical engineering1
- Electrical engineering -- Research1
- Engineers1
- Etchings (prints)1