登入選單

返回Google圖書搜尋

Effects of Differing Abundance Levels of Aphids and of Certain Virus Diseases Upon Yield and Virus Disease Spread in Potatoes

Eban A OsgoodLife Sciences and Agriculture Experiment StationNorman P. KutschaW. L. VaundellWayland Arthur ShandsJames R. Gray

出版	Life Sciences and Agriculture Experiment Station, University of Maine at Orono, 1971
URL	http://books.google.com.hk/books?id=h69QAQAAMAAJ&hl=&source=gbs_api