@article{23802,
      recid = {23802},
      author = {Polgar, Steven,},
      title = {Population, ecology, and social evolution /. International  Congress of Anthropological and Ethnological Sciences},
      publisher = {Mouton ;},
      address = {The Hague :},
      pages = {x, 354 p. ;},
      year = {1975},
      url = {http://library.usi.edu/record/23802},
}