@article{6429,
      recid = {6429},
      author = {Ayala, Francisco José,},
      title = {Molecular evolution /},
      publisher = {Sinauer Associates,},
      address = {Sunderland, Mass. :},
      pages = {x, 277 p. :},
      year = {1976},
      url = {http://library.usi.edu/record/6429},
}