A proposal for an international nomenclature of races of Phytophthora infestans and of genes controlling immunity in Solanum demissum derivatives W. BlackC. MastenbroekL. C. Peterson OriginalPaper Pages: 173 - 179
Breeding for resistance to potato root eelworm H. J. ToxopeusC. A Huijsman OriginalPaper Pages: 180 - 186
Experiments on the inheritance of blight immunity in potatoes derived from solanum demissum Lindl. C. Mastenbroek OriginalPaper Pages: 197 - 206
Fifteen years activity of the Commission for the Advancement of Potato Breeding ReviewPaper Pages: 211 - 223
The significance of andromonoecism for the breeding of Asparagus officinalis L. II J. Sneep OriginalPaper Pages: 224 - 228
Het gebruik van een handrefractometer bij de drogestofbepaling van voederbieten OriginalPaper Pages: 229 - 233