Subject
Genetics,Anthropology,Ecology, Evolution, Behavior and Systematics,Demography
Reference23 articles.
1. Ethnic Differences in Fertility and Sex Ratios at Birth in China: Evidence from Xinjiang
2. Chen, S. Sampling design of China's fertility and birth control sample survey. Proceedings of National Conference on China's 1988 Two‐per‐Thousand Fertility and Birth Control Survey. Hangzhou, China. pp.10–22.
3. A randomized comparative clinical evaluation of the steel ring, the VCu200 and the TCu220c IUDs