A distinctive strain of the red clover mottle virus in the Netherlands L. BosD. Z. Maat OriginalPaper Pages: 8 - 13
Electron microscope observations on the structure of membranes from nuclear polyhedral viruses M. B. PonsenS. HenstraChristina van der Scheer OriginalPaper Pages: 20 - 24
Production of virus-free freesia's by means of meristem culture D. Hendrina BrantsH. Vermeulen Short Communication Pages: 25 - 27