Sex ratio -- China. / https://id.loc.gov/authorities/subjects/sh85120661 https://id.loc.gov/authorities/names/n79091151-781 : United States.
2011
1
3
Sex ratio -- Cross-cultural studies. / https://id.loc.gov/authorities/subjects/sh85120661 https://id.loc.gov/authorities/subjects/sh99001526 : Cavin, Susan,
1985
1
4
Sex ratio -- Social aspects -- History. / https://id.loc.gov/authorities/subjects/sh85120661 https://id.loc.gov/authorities/subjects/sh00002758 https://id.loc.gov/authorities/subjects/sh99005024 : Guttentag, Marcia.