登入選單

返回Google圖書搜尋

Powdery Scab (Spongospora Subterranea) of Potatoes

Irving E. Melhus

出版	U.S. Department of Agriculture, 1914
URL	http://books.google.com.hk/books?id=1x5iBw2a-hAC&hl=&source=gbs_api
EBook	FULL_PUBLIC_DOMAIN