@article{510718,
      recid = {510718},
      author = {Maitland, W.},
      title = {An essay towards the improvement of navigation, chiefly  with respect to the instruments used at sea. By W.  Maitland. [electronic resource] :},
      publisher = {printed by H. Kent for the author; and sold by J. Scott,  Bookseller, in Change-Alley; A. Miller, Bookseller, in the  Strand; J. Millan, opposite the Admiralty-Office; and at  all the pamphlet shops, and most instrument-makers shops in  London,},
      address = {London :},
      pages = {[4],51,[1]p. ;},
      year = {1750},
      note = {With a half-title.},
      url = {http://library.usi.edu/record/510718},
}