Hartley, D. (1749). Observations on man: His frame, his duty, and his expectations. In two parts. By David Hartley, .. printed by S. Richardson; for James Leake and Wm. Frederick, in Bath: and sold by Charles Hitch and Stephen Austen, in London.

Hartley, David. Observations on Man: His Frame, His Duty, and His Expectations. In Two Parts. By David Hartley, .. printed by S. Richardson; for James Leake and Wm. Frederick, in Bath: and sold by Charles Hitch and Stephen Austen, in London, 1749.