@article{91191,
      author = {Clark, Grahame, and Piggott, Stuart,},
      url = {http://library.usi.edu/record/91191},
      title = {Prehistoric societies,},
      publisher = {Knopf,},
      recid = {91191},
      pages = {356 p.},
      address = {New York,},
      year = {1965},
}