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Stray Voltage Problems with Dairy Cows
H. A. Cloud
R. D. (Robert Dean) Appleman
R. J. Gustafson
Ontario. Ministry of Agriculture and Food
出版
Ontario Ministry of Agriculture and Food
, 1982
URL
http://books.google.com.hk/books?id=JgSsMwEACAAJ&hl=&source=gbs_api