@article{53489,
      author = {Calvin, Melvin,},
      url = {http://library.usi.edu/record/53489},
      title = {Chemical evolution; molecular evolution towards the origin  of living systems on the earth and elsewhere.},
      publisher = {Oxford University Press,},
      recid = {53489},
      pages = {ix, 278 p.},
      address = {New York,},
      year = {1969},
}