Collier's New Encyclopedia

A complete general encyclopedia of 1921 — the world as it was understood just after the Great War, from Aachen to Zwingli, across twelve volumes and six thousand pages.

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Birth Control

a movement supported by many physicians, publicists, and social workers whose aim is to bring about an enlightened control of conception for the purpose of preventing undesirable and undesired families. The principles of the American Birth Control League are that every woman should possess the power and freedom to prevent conception when she feels that conditions are not such as would make the 1

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