@article{146446,
      note = {Based on a conference held at the National Institute of  Mental Health, Bethesda, Md. in April 1982, under the  auspices of the Society for Research in Child Development  and the Child Development Foundation.},
      author = {Zahn-Waxler, Carolyn. and Cummings, E. Mark. and Iannotti,  Ronald.},
      url = {http://library.usi.edu/record/146446},
      title = {Altruism and aggression : biological and social origins /},
      publisher = {Cambridge University Press,},
      recid = {146446},
      pages = {xiii, 337 p. :},
      address = {Cambridge ;},
      year = {1991},
}