An Essay on the Opium Trade: Including a Sketch of Its History, Extent, Effects, Etc., as Carried on in India and China

Medical Problems of the Day: The Annual Discourse Before the Massachusetts Medical Society, June 3, 1874

Population: Its Law of Increase ...

Physical Culture in Amherst College: By Nathan Allen, M.D.

The Law of Human Increase: Or Population Based on Physiology and Psychology