1. Observations on the progress of population, and the probabilities of the duration of human life, in the United States of America: read before the American Philosophical Society held at Philadelphia, for Promoting Useful Knowledge Author(s): Barton, William, 1754-1817 Publication: [Philadelphia] R. Aitken & Son, MDCCXCI [1791] Subject(s): Life ExpectancyMortalityUnited States
