Coital rates, sex-selective infanticide, and sex ratios at birth.
Galton Laboratory, University College London.
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James
D003075:Coitus; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007237:Infanticide; D008297:Male; D008849:Micronesia; D012743:Sex Preselection / Q000379:methods*; D012744:Sex Ratio