@article{870939,
      recid = {870939},
      author = {Dana, James Dwight,},
      title = {On the four rocks of the New Haven region, East Rock, West  Rock, Pine Rock, and Mill Rock, in illustration of the  features of non-volcanic igneous ejections : with a guide  to walks and drives about New Haven /},
      pages = {1 online resource (vi, 120 pages, VII leaves of plates) :},
      note = {Reproduction of the original from the American Antiquarian  Society.},
      url = {http://library.usi.edu/record/870939},
}