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Google圖書搜尋
Average Number of Children Per Woman in Butler County, Ohio: 1930
Warren Simpson Thompson
Nelle Elizabeth Jackson
Richard Otto Lang
其他書名
A Study in Differential Fertility
出版
Bureau of ther Census
, 1941
URL
http://books.google.com.hk/books?id=FYBEPvjeyz8C&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN