Influence of some insecticides on the development of caterpillar populations on cabbage J. TheunissenH. Den Ouden OriginalPaper Pages: 157 - 165
Enzyme-linked immunosorbent assay (ELISA) for the detection of potato viruses A and Y in potato leaves and sprouts D. Z. MaatJ. A. De Bokx OriginalPaper Pages: 167 - 173
Cucumber mosaic virus isolated from Yucca flaccida Inge BouwenA. J. WitJeanne Dijkstra OriginalPaper Pages: 175 - 183
Leek yellow stripe virus and its relationships to onion yellow dwarf virus; characterization, ecology and possible control L. BosN. HuijbertsD. Z. Maat OriginalPaper Pages: 185 - 204