VII. COMPETITION AND "THE INNER ENEMIES"

A. The Struggle for Existence and Its Social Consequences

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(5) Field, James A. "The Early Propagandist Movement in English Population Theory," American Economic Association Bulletin, 4th Ser., I (1911), 207-36.

(6) Heron, David. On the Relation of Fertility in Man to Social Status. And on the changes in this relation that have taken place during the last fifty years. London, 1906.

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