1. Medical services: new programs for old problem.;Hanlon;Health Serv Rep,1973
2. A total emergency medical service system for Illinois.;Boyd;Ill Med J,1972
3. The conceptual development of EMS systems in the United States: part I.;Boyd;Emerg Med Serv,1982
4. The conceptual development of EMS systems in the United States: part II.;Boyd;Emerg Med Serv,1982
5. 1982. A.A.S.T. Presidential address: the trauma center: its hospitals.;Freeark;Head Inj Heroes J Trauma,1983