Subjects
- NONE 14
- Names, Geographical 2
- Natural History--Pre-Linnaen works 3
- Natural history--Pre-Linnean works 4
- Neoplatonism--Early works to 1800 1
- Nicomachus--of Gerasa--Introductio arithmetica 2
- Obligations (Islamic law) 1
- Occasional verse, Latin 4
- Occasional verse, Latin--Translations into English 15
- Occultism--Early works to 1900 1
- Ocular Physiology 4
- Odysseus (Greek mythology)--Poetry 8
- Offensive (Military science) 1
- Old Age--Early Works to 1800 2
- Old age--Early works to 1800 18
- Olympic games (Ancient)--Poetry 13
- Omens 5
- Optics--Early Works to 1800 4
- Orators--Greece 42
- Orators--Greece--Correspondence 62
