@article{311884,
      author = {Enger, Sandra K. and Yager, Robert Eugene,},
      url = {http://library.usi.edu/record/311884},
      title = {Assessing student understanding in science : a  standards-based K-12 handbook /},
      publisher = {Corwin Press,},
      recid = {311884},
      pages = {xi, 178 p. :},
      address = {Thousand Oaks, Calif. :},
      year = {2001},
}