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200 10$aPrevalence of selected chronic digestive conditions, United States, 1975 : statistics on prevalence of chronic digestive conditions by measures of impact of the conditions and selected demographic characteristics. Based on data collected in the Health In
210   $aHyattsville, Md$cU.S. Department of Health, Education, and Welfare, Public Health Service, Office of Health Research, Statistics, and Technology National Center for Health Statistics
517   $aPrevalence of selected chronic digestive conditions, United States, 1975 
906   $aBOOK
912   $a9910712791303321
996   $aPrevalence of selected chronic digestive conditions, United States, 1975 : statistics on prevalence of chronic digestive conditions by measures of impact of the conditions and selected demographic characteristics. Based on data collected in the Health In$93307333
997   $aUNINA