Columbia subject headings:
Harvard subject headings:
Demography.
Economics
Malthus, T. R. (Thomas Robert), 1766-1834--Political and social views.
Malthus, T. R. (Thomas Robert), 1766-1834.
Malthusianism.
Population
Princeton subject headings:
Economics--Great Britain--History--19th century.
Malthus, T. R. (Thomas Robert), 1766-1834.