Zeitschrift für Sexualwissenschaft, Bd. 1, April, 1914-, Bonn [1915-].
Social Hygiene, Vol. I, December, 1914-, New York [1915-].
Die Neuere Generation, Bd. I, 1908-Berlin [1908-]. Preceded by Mutterschutz, Vols. I-III.
TOPICS FOR WRITTEN THEMES
1. Society and the Individual: The Cardinal Problem of Sociology.
2. Historic Conceptions of Society: Aristotle, Hobbes, Rousseau, etc.
3. Plant Communities.
4. Animal Societies: The Ant Colony, the Bee Hive.
5. Animal Communities, or Studies in Animal Ecology.
6. Human Communities, Human Ecology, and Economics.