A new species of Embellisia, associated with skin disease of hyacinths G. S. de HoogP. J. Muller OriginalPaper Pages: 85 - 93
Light and electron microscopy of red clover vein mosaic virus in pea (Pisum sativum) M. Rubio-HuertosL. Bos OriginalPaper Pages: 94 - 103
Some chemical and physical properties of 18 tobacco mosaic virus isolates from tomato W. H. M. MoschH. HuttingaA. Th. B. Rast OriginalPaper Pages: 104 - 111
An anomalous form of mycoplasma-like bodies in periwinkle infected with the sandal spike agent C. HirukiJeanne Dijkstra OriginalPaper Pages: 112 - 121
Ziekten en beschadigingen van landbouwgewassen en hun bestrijding L. Bos Book Review Pages: 121 - 121
Observations on the enemies of the oyster shell scale, Lepidosaphes ulmi, on apple in the Netherlands M. M. D. Karsemeijer Short Communications Pages: 122 - 124