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Subjects
- Chemists[remove]11
- College teachers5
- Photographic prints4
- Photography -- Research4
- Chemistry -- Study and teaching2
- Chemistry, Technical2
- Diaries2
- Drawings (visual works)2
- Patents2
- Receipts (financial records)2
- Scrapbooks2
- blueprints (reprographic copies)2
- 35mm (photographic film size)1
- Account books1
- Advertisements1
- Agreements1
- Aniline Dye1
- Arsenic1
- Atomic bomb1
- Audio amplifiers1