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2. Health Care Delivery: Spatial Perspectives;Shannon,1984
3. Health care practitioner use in Calabar, Nigeria;Gesler;Soc. Sci. Med.,1979
4. Distance and the utilization of health facilities in rural Nigeria;Stock;Soc. Sci. Med.,1983
5. Global Strategy for Health for All by the Year 2000;World Health Organization;World Health Organization Document EB67/PC/WP/3,1980