@article{115442,
      recid = {115442},
      author = {Tolman, Marvin N. and Morton, James Otis,},
      title = {Physical science activities for grades 2-8 /},
      publisher = {Parker Pub. Co.,},
      address = {West Nyack, N.Y. :},
      pages = {[30], 263 p. :},
      year = {1986},
      url = {http://library.usi.edu/record/115442},
}