The role of genetics in defining characters for the identification and classification of pea cultivars (Pisum sativum L.)
." In Infraspecific classification of wild and cultivated plants
, edited by B. T. Styles, 317-330. Vol. 29. Systematics Association special volume 29. Oxford: Clarendon, 1986.
The use of a descriptive database as an aid to assessing the distinctness of pea cultivars (Pisum sativum L.)
." In Databases in systematics
, edited by R. Allkin and F. A. Bisby, 189-200. Vol. 26. The Systematics Association special volume 26. London: Published for the Systematics Association by Academic Press, 1984.
Maintaining Scottish seed potatoes free from Ralstonia solanacearum
." In Bacterial wilt disease: molecular and ecological aspects
, edited by P. Prior, C. Allen and J. Elphinstone, 410-412. Berlin: Springer Verlag, 1998.