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Testing Vinifera Grape Varieties Grafted on Phylloxera-resistant Rootstocks in California, by George C. Husmann ... Elmer Snyder ... and Frederick L. Husmann ...

George Charles HusmannUnited States. Bureau of Plant IndustryElmer SnyderFrederick L. Husmann

出版	U.S. Government Printing Office, 1939
URL	http://books.google.com.hk/books?id=Mol2AQAACAAJ&hl=&source=gbs_api