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Google圖書搜尋
The Test Weight of Grain
Emil George Boerner
Elihu Harrison Ropes
其他書名
A Simple Method of Determining the Accuracy of the Testing Apparatus
出版
U.S. Department of Agriculture
, 1922
URL
http://books.google.com.hk/books?id=qEytSLYJxCUC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN