![](/img/cover-not-exists.png)
Mother's occupation and sex ratio at birth
Kathreen E Ruckstuhl, Grant P Colijn, Volodymyr Amiot, Erin VinishVolume:
10
Language:
english
DOI:
10.1186/1471-2458-10-269
Date:
December, 2010
File:
PDF, 1.07 MB
english, 2010