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American Fertilizers
Perry Eugene Howard
出版
U.S. Department of Agriculture
, 1932
URL
http://books.google.com.hk/books?id=_ler2_3zWYAC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN
註釋
In this publication is given a brief description of the production of commercial fertilizer. It is believed that this description, which complex technical discussion and statistics are avoided, will be of use to students, as well as farmers and gardeners.