Mothers -- Mortality -- Congresses. / https://id.loc.gov/authorities/subjects/sh85087530 https://id.loc.gov/authorities/subjects/sh99001533 : National Research Council (U.S.).
Mothers -- Mortality -- United States. / https://id.loc.gov/authorities/subjects/sh85087530 https://id.loc.gov/authorities/names/n78095330-781 : National Academies of Sciences, Engineering, and Medicine (U.S.).