@article{714540,
      author = {Schafer, James A.,},
      url = {http://library.usi.edu/record/714540},
      title = {The business of private medical practice doctors,  specialization, and urban change in Philadelphia, 1900-1940  / [electronic resource] :},
      recid = {714540},
      pages = {1 online resource (276 pages) :},
}