@article{173434,
      author = {Bostock, Stephen St. C.,},
      url = {http://library.usi.edu/record/173434},
      title = {Zoos and animal rights : the ethics of keeping animals /},
      publisher = {Routledge,},
      recid = {173434},
      pages = {xi, 227 p. ;},
      address = {London ;},
      year = {1993},
}