@article{179018,
      note = {Distributed to depository libraries in microfiche.},
      url = {http://library.usi.edu/record/179018},
      title = {Detectable warning surfaces color, contrast,    and  reflectance : final report. [microform] :},
      publisher = {U.S. Dept. of Transportation, Office of       Engineering  Evaluations ;},
      recid = {179018},
      pages = {1 v.},
      address = {Washington, D.C. :},
      year = {1994},
}