@article{385214,
      author = {Cross, Christopher T. and Woods, Taniesha A. and  Schweingruber, Heidi A.},
      url = {http://library.usi.edu/record/385214},
      title = {Mathematics learning in early childhood paths toward  excellence and equity / [electronic resource] :},
      publisher = {National Academies Press,},
      recid = {385214},
      pages = {xii, 386 p.},
      address = {Washington, DC :},
      year = {2009},
}