登入選單
返回Google圖書搜尋
其他書名
Their Equipment, Construction, and Operation
出版U.S. Department of Agriculture, 1920
URLhttp://books.google.com.hk/books?id=1jPe4gxIzCEC&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN
註釋Of control measures -- Dormant sprays. pp. 23.