@article{20584,
      recid = {20584},
      title = {National hmo census of prepaid plans.},
      publisher = {Dept. of Health, Education, and Welfare, Public Health  Service, [Office of the Assistant Secretary for Health],  Office of Health Maintenance Organizations, Division of  Program Promotion.},
      address = {[Rockville, Md.]},
      pages = {v.},
      url = {http://library.usi.edu/record/20584},
}