The phytotoxicity of some phenolic metabolic products of Ophiostoma ulmi to ulmus sp. N. ClaydonD. M. ElgersmaJohn Frederick Grove OriginalPaper Pages: 229 - 237
Purification of lily symptomless virus. Use and value of antisera against intact and pyrrolidine-degraded virus for testing lilies and tulips A. F. L. M. DerksJenny L. Vink-Van Den Abeele OriginalPaper Pages: 239 - 250
Mechanism of resistance to pyrazophos in Pyricularia oryzae M. A. De WaardJ. G. M. Van Nistelrooy OriginalPaper Pages: 251 - 258
Preliminary description of a potyvirus from Vallota speciosa N. InouyeF. A. Hakkaart OriginalPaper Pages: 265 - 275