A proposal of a new method for finding the longitude at sea, or land [electronic resource] : Together with the description and figure of a new instrument invented for the performance of it. By William Jones, M.D.
With a half-title. Vertical chain lines. Reproduction of original from the British Library. Available online to authorized PSU users as part of the Medicine, science, and technology series of Eighteenth century collections online.
Electronic reproduction. Farmington Hills, Mich. : Thomson Gale, 2003. Available via the World Wide Web. Access limited by licensing agreements