@article{15412,
      recid = {15412},
      author = {Clark, Leonard H. and Klein, Raymond L., and Burks, John  B.,},
      title = {The American secondary school curriculum},
      publisher = {Macmillan},
      address = {New York,},
      pages = {xv, 607 p.},
      year = {1972},
      url = {http://library.usi.edu/record/15412},
}