The decline of small pox and the demographic revolution of the eighteenth century.
Luckin
B
B
D000486:Allergy and Immunology / Q000266:history*; D003710:Demography; D049711:History, Modern 1601-; D012899:Smallpox / Q000266:history*; D013223:Statistics as Topic / Q000266:history*; D006113:United Kingdom