登入選單

返回Google圖書搜尋

Control of the Brown Apricot Scale and the Italian Pear Scale on Deciduous Fruit Trees

Edward Oliver Essig

出版	University of California, College of Agriculture, Agricultural Experiment Station, 1920
URL	http://books.google.com.hk/books?id=c-AoAAAAYAAJ&hl=&source=gbs_api