National Center for Vital Statistics. Prevalence of selected chronic respiratory conditions, United States, 1970.: Statistics on prevalence of chronic repiratory conditions by measures of impact of the conditions and selected demographic characteristics.
Chicago Style (17th ed.) CitationNational Center for Vital Statistics. Prevalence of Selected Chronic Respiratory Conditions, United States, 1970.: Statistics on Prevalence of Chronic Repiratory Conditions by Measures of Impact of the Conditions and Selected Demographic Characteristics.
MLA (9th ed.) CitationNational Center for Vital Statistics. Prevalence of Selected Chronic Respiratory Conditions, United States, 1970.: Statistics on Prevalence of Chronic Repiratory Conditions by Measures of Impact of the Conditions and Selected Demographic Characteristics.