@article{58900,
      author = {Kummel, Bernhard,},
      url = {http://library.usi.edu/record/58900},
      title = {History of the earth; an introduction to historical  geology.},
      publisher = {W. H. Freeman,},
      recid = {58900},
      pages = {610 p.},
      address = {San Francisco,},
      year = {1961},
}