@article{810928,
      author = {Biller, Peter.},
      url = {http://library.usi.edu/record/810928},
      title = {The measure of multitude: population in medieval thought  /},
      publisher = {Oxford University Press,},
      recid = {810928},
      pages = {xxi, 476 p. :},
      address = {Oxford ;},
      year = {2000},
}