1. Aldwinckle, H. S., 1975. Flowering of apple seedlings 16–20 months after germination. HortScience 10: 124–126.
2. Aldwinckle, H. S. & J. N. Cummins, 1973. Artificial inoculation of apple rootstock clones and their orogenies with fire blight. Abstract no. 0748 in: Abstr. Papers second int. Congr. Pl. Path., 5–12 Septamber 1973, Minneapolis, Minnesota.
3. Aldwinckle, H. S., R. C. Lamb & H. L. Gustafson, 1976. Nature and inheritance of resistance to Gymnosporangium juniperi-virginianae in apple cultivars. Phytopathology: (In press).
4. Alston, F. H., R. Watkins & J. M. Werts, 1974. Disease resistance (Fruit Breeding). East Malling Res. Stn A. Rep., 1973: 122–123.
5. Butt, D. J. & E. Bridle, 1974. Apple powdery mildew (Podosphaera leucotricha). Resistance testing. East Malling Res. Stn A. Rep., 1973: 142–143.