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United States Grades for Timothy Hay, Clover Hay, Clover Mixed Hay, and Grass Mixed Hay, Effective February 1, 1924
Edward Cary Parker
其他書名
Including an Outline of Haymaking, Baling, and Loading Methods Essential to the Marketing of High Grade Hay
出版
U.S. Department of Agriculture
, 1924
URL
http://books.google.com.hk/books?id=S-pM8-iwuSoC&hl=&source=gbs_api
EBook
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