@article{535687,
      recid = {535687},
      author = {Cockrel, Richard.},
      title = {An introduction to plain trigonometry, with its  application to heights and distances. Containing an  Explanation of the three Varieties of right angled  Triangles, and the four Cases of Oblique, together with a  Variety of Questions interspersed by way of Exercise. By  Richard Cockrel, Teacher of the Free School, at Lartington.  [electronic resource] :},
      publisher = {printed and sold by M. Heavisides, for the author; by  Messrs. Law and Son, Ave Maria Lane; and Mr. D. Taylor, No.  35. Union Street, Bishopgate-Street London; Mr. Pine,  Bristol; Messrs. Wilson and Spence, York ; and Mr.  Nicholson, Barnardcastle,},
      address = {Darlington :},
      pages = {[2], iv, [2], 99, [1] p. :},
      year = {1792},
      note = {Reproduction of original from British Library.},
      url = {http://library.usi.edu/record/535687},
}