Filmed with: La philosophie invididualiste : étude sur Guillaume de Humboldt / par M. Challemel-Lacour (1864).
Microfilm. Ann Arbor, University of Michigan, University Library, Preservation Office Microfilming Unit, 1991. 1 reel : negative ; 35 mm.
French translation of: Physics and politics, or, Thoughts on the application of the principles of "natural selection" and "inheritance" to political science.