@article{134645,
      note = {A selected sample of exercices were originally presented  at workshops.},
      author = {Swetz, Frank J., and Hartzler, J. S.},
      url = {http://library.usi.edu/record/134645},
      title = {Mathematical modeling in the secondary school curriculum :  a resource guide of classroom exercises /},
      publisher = {National Council of Teachers of Mathematics,},
      recid = {134645},
      pages = {viii, 136 p. :},
      address = {Reston, Va. :},
      year = {1991},
}