- Mathematical recreations1
- Mathematics17
- Mathematics, Arab2
- Mathematics, Greek2
- Matter--Religious aspects--Hinduism7
- Maxims, Sanskrit3
- Maya (Hinduism)1
- Meaning (Philosophy)--Religious aspects--Hinduism3
- Mechanics1
- Medea, consort of Aegeus, King of Athens (Mythological character)1
- Medical astrology1
- Medicinal plants6
- Medicine45
- Medicine, Arab12
- Medicine, Ayurvedic18
- Medicine, Ayurvedic--Formulae, receipts, prescriptions4
- Medicine, Magic, mystic, and spagiric2
- Medicine, Medieval14
- Medicine, Persian1
- Medicine--Formulae, receipts, prescriptions2