Subjects
- Mandibular Diseases1
- New York2
- New York City7
- Nitrous Oxide1
- Ontario -- epidemiology1
- Parasitic Diseases1
- Paris2
- Pharmaceutical Preparations1
- Philadelphia1
- Poland2
- Prisoners1
- Public Health1
- Public Health Administration1
- Quarantine -- legislation & jurisprudence1
- Quebec2
- Read, James Bond, 1766-1841.1
- Resuscitation1
- Riker, Richard, 1773-1842.1
- Russia4
- Russia (Pre-1917)1