@article{1372446,
      recid = {1372446},
      author = {Johnson, Carla C., and Walton, Janet B., and  Peters-Burton, Erin,},
      title = {Radioactivity, grade 11 : STEM road map for high school /},
      pages = {1 online resource (199 pages)},
      url = {http://library.usi.edu/record/1372446},
}