Drukkerij Veenman 50 Jaar Drukker van Het Tijdschrift over Planteziekten De Redactie Announcement Pages: 137 - 138
Effects of removal of leaves and tops on translocation of potato virus X and potato virus YN in potato plants A. B. R. Beemster OriginalPaper Pages: 139 - 146
Yield of glasshouse tomatoes as affected by strains of tobacco mosaic virus A. Th. B. Rast OriginalPaper Pages: 147 - 156
Studies on the biology ofBotrytis allii onAllium cep A G. M. Tichelaar OriginalPaper Pages: 157 - 160
Partial infection with potato virus YN of tubers from primarily infected potato plants A. B. R. Beemster OriginalPaper Pages: 161 - 164
A new approach to the physiological host plant-parasite relationship — A technique in the field of applied entomology J. J. H. StormsP. HarrewijnJ. Ph. W. Noordink OriginalPaper Pages: 165 - 169
De Levenswijze en de Bestrijding van de Rondknopmijt van Zwarte Bes,Cecidophyopsis ribis M. van de Vrie OriginalPaper Pages: 170 - 180
Effect of aluminium strips on the spread of two aphid-borne chrysanthemum viruses F. A. Hakkaart OriginalPaper Pages: 181 - 185
Differences in aggressiveness between TMV-isolates from tomato on clones ofLycopersicum peruvianum A. Th. B. Rast OriginalPaper Pages: 186 - 189
