@article{59273,
      author = {Schmidt, Karl Patterson, and Davis, D. Dwight},
      url = {http://library.usi.edu/record/59273},
      title = {Field book of snakes of the United States and Canada /},
      publisher = {G.P. Putnam's Sons,},
      recid = {59273},
      pages = {xiii, 365 p. :},
      address = {New York :},
      year = {1941},
}