00524nam a2200133Ia 450000500170000000800410001704100080005808200150006610000240008124500450010526000460015030000120019665001820020820191224152501.0190710s9999    xx            000 0 und d  aeng  a614.0973 U  aPorterfield, John D 0aCommunity health in the United Statesb:  aNew Yorkb: Voice of America Forum L, c,  a269 p.   aCommunity health - United states a| Communicable diseases - United statesa| Diseases - United states a| Vital statisties - United states a| Health education - United states