1. Health and Work in America: A Chart Book;American Public Health Association,1975
2. Implementing rural emergency health services systems;Waller;J. Am. Coll. Emerg. Physn,1974
3. An overview of rural EMS;Lepper;Emerg. med. Serv.,1975
4. The barefoot doctors of the People's Republic of China;Sidel;New Engl. J. Med.,1972
5. Evaluation of the role of police in the EMS system;Myrick,1978