RT Journal Article SR Electronic T1 The Development and Spread of Some Virus Diseases of Grapevines in California Vineyards JF American Journal of Enology and Viticulture JO Am J Enol Vitic. FD American Society for Enology and Viticulture SP 26 OP 29 DO 10.5344/ajev.1954.5.1.26 VO 5 IS 1 A1 William B. Hewitt YR 1954 UL http://www.ajevonline.org/content/5/1/26.abstract AB The symptoms, distribution, and importance of Fanleaf and Yellow Mosaic, two virus diseases of grapevines, are given. Evidence of strains of yellow mosaic and retention of the virus in the soil is also presented.