@article{102102,
      author = {Lee, Jackson F.},
      url = {http://library.usi.edu/record/102102},
      title = {Providing for individual differences in student learning :  a mastery learning approach /},
      publisher = {C.C. Thomas,},
      recid = {102102},
      pages = {vii, 121 p. ;},
      address = {Springfield, Ill., U.S.A. :},
      year = {1984},
}