@article{54128,
      author = {Kummel, Bernhard,},
      url = {http://library.usi.edu/record/54128},
      title = {History of the earth; an introduction to historical  geology.},
      publisher = {W. H. Freeman},
      recid = {54128},
      pages = {xix, 707 p.},
      address = {San Francisco,},
      year = {1970},
}