The effect of viruses on infection byPhytophthora infestans (Mont.) De Bary in potatoes C. Fernandez de CubillosH. D. Thurston OriginalPaper Pages: 221 - 226
Variety trial of potatoes resistant to Verticillium wilt M. SusnoschiJ. KrikunZ. Zuta OriginalPaper Pages: 227 - 231
Optical density variation in aerial photographs of potato plots infected withPhytophthora infestans V. R. WallenH. R. JacksonA. M. Smith OriginalPaper Pages: 233 - 238
Abstracts 59th annual meeting Potato Association of America Hudson D. E.M. D. VolzDouglas D. R. News and Reviews Pages: 239 - 248