@article{326973,
      note = {"Most of the drawings are taken from the sketchbooks of  Conrad Martens, the Beagle's artist."--p. 405.},
      author = {Darwin, Charles, and Burkhardt, Frederick, and Martens,  Conrad,},
      url = {http://library.usi.edu/record/326973},
      title = {The Beagle letters /},
      publisher = {Cambridge University Press,},
      recid = {326973},
      pages = {xxx, 470 p., [40] p. of plates :},
      address = {Cambridge :},
      year = {2008},
}