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Subjects
- Alchemy1
- Astronomical Phenomena2
- Biological Phenomena1
- Chemical Phenomena7
- Communicable Diseases -- transmission1
- Data Interpretation, Statistical1
- Disease -- etiology1
- Electricity2
- Explosive Agents1
- Forensic Ballistics1
- Gases1
- History, 19th Century1
- Hot Temperature1
- Life2
- Light2
- Mathematical Concepts1
- Medicine1
- Mental Processes1
- Philosophy, Medical1
- Physical Phenomena[remove]50