返回Google圖書搜尋

Spraying Experiments Against the Grape Leafhoper ["sic"] ("Typhtocyba Comes") in the Lake Erie Valley, by Fred Johnson ...

出版	U.S. Government Printing Office, 1911
URL	http://books.google.com.hk/books?id=nBFiQwAACAAJ&hl=&source=gbs_api