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Subjects
- College teachers1
- Laboratory notebooks1
- Metallurgical research1
- Metallurgists1
- Metallurgy -- Equipment and supplies1
- Metallurgy -- Study and teaching1
- Mines and mineral resources1
- Mining corporations1
- Photographic prints1
- Refrigeration and refrigerating machinery -- Experiments1
- Scrapbooks1
- Steel -- Metallurgy1