Prenatal care -- Congresses. / https://id.loc.gov/authorities/subjects/sh85106374 https://id.loc.gov/authorities/subjects/sh99001533 : Symposium on the Cost of Preventing Major Mental Handicap
Prenatal care -- United States -- Bibliography. / https://id.loc.gov/authorities/subjects/sh85106374 https://id.loc.gov/authorities/names/n78095330-781 https://id.loc.gov/authorities/subjects/sh99001362