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Google圖書搜尋
The Hired Farm Working Force of 1957
Sheridan Tracy Maitland
Dorothy Anne Fisher
出版
Agricultural Marketing Service, U.S. Department of Agriculture
, 1959
URL
http://books.google.com.hk/books?id=rTni1SKv3MsC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
註釋
The hired farm working force in 1957 totaled nearly 4 million workers and was the largest since 1950. However, most of the increase over 1956 was among the very short-term seasonal workers, those with fewer than 25 days of farm wage work during the year.
