@article{136219,
      author = {Martin, Bill, and Carle, Eric,},
      url = {http://library.usi.edu/record/136219},
      title = {Polar bear, polar bear, what do you hear? /},
      publisher = {H. Holt,},
      abstract = {Zoo animals from polar bear to walrus make their  distinctive sounds for each other, while children imitate  the sounds for the zookeeper.},
      recid = {136219},
      pages = {1 v. (unpaged) :},
      address = {New York :},
      year = {1991},
}