Virus X resistance in potato W. J. HookerC. E. PetersonRoland G. Timian OriginalPaper Pages: 199 - 212
A strain of potato-virus Y inducing local and systemic necrotic spots on leaves of tobacco white burley K. SilberschmidtE. RostomC. Mattos Ulson OriginalPaper Pages: 213 - 217