Studies on the sterile-male technique as a means of control of Adoxophyes orana (Lepidopt., Tortricidae). 1. Problems of mass rearing (crowding effects) G. W. AnkersmitF. Th. M. van der Meer OriginalPaper Pages: 54 - 61
Changes in the quantity of ribosomes in healthy and virus-diseased plants during senescence J. H. VenekampV. Taborsky OriginalPaper Pages: 62 - 69
Differences in disc gel electrophorese pattern of soluble proteins excreted by different physiological races and isolates of Cladosporium fulvum A. Van DijkmanS. J. DielemanA. Kaars Sijpesteijn OriginalPaper Pages: 70 - 80
The spread of carnation mottle virus in carnations in glass-houses R. Zandvoort Short Communication Pages: 81 - 84