Columbia subject headings:
Harvard subject headings:
Malthus, T. R. (Thomas Robert), 1766-1834.
Population--History
Princeton subject headings:
Darwin, Charles, 1809-1882.
Fertility, Human--Historiography.
Human beings--Effect of environment on--Historiography.
Malthus, T. R. (Thomas Robert), 1766-1834--Contributions in demography.
Malthus, T. R. (Thomas Robert), 1766-1834--Influence.
Natural selection--Historiography.
Natural theology--History of doctrines.
Nature--Effect of human beings on--Historiography.
Philosophy of nature--Historiography.
Population research--History.
Population--History--Historiography.
Providence and government of God--Historiography.
Spencer, Herbert, 1820-1903.