Breeding male sterile lines of dutch onion varieties as a preliminary to the breeding of hybrid varieties O. BangaJ. Petiet OriginalPaper Pages: 21 - 30
Geert Veenhuizen (1857–1930), the pioneer of potato breeding in the Netherlands H. de Haan OriginalPaper Pages: 31 - 37
Note on the variation in expression of hypersensitivity to Phytophthora infestans in potato seedlings OriginalPaper Pages: 38 - 40