@article{887716,
      recid = {887716},
      author = {Hansen, Alice.},
      title = {Primary mathematics extending knowledge in practice /  [electronic resource] :},
      publisher = {Learning Matters,},
      address = {Exeter [England] :},
      pages = {vii, 133  p. :},
      year = {2008},
      url = {http://library.usi.edu/record/887716},
}