@article{744777,
      author = {Isaacs, Nathan, and Lawrence, Evelyn,},
      url = {http://library.usi.edu/record/744777},
      title = {A brief introduction to Piaget the growth of understanding  in the young child and new light on children's ideas of  number / [electronic resource] :},
      recid = {744777},
      pages = {1 online resource (116 pages)},
}