Contraception use
Associated Documents (1)
| Main Author | Published Year | Title | Document Type | ||
|---|---|---|---|---|---|
| Barber, Nigel | Sex Ratio at Birth, Polygyny, and Fertility: A Cross-National Study | Article | |||
Associated Hypotheses (1)
| Main Author | Published Year | Hypothesis | |
|---|---|---|---|
| Barber, Nigel | 2004 | The sex ratio should be higher in countries where contraception is widely practiced. |