1. Soluble Peroxidase from Winter Wheat Seedlings with Phenoloxidase-Like Activity
2. , 1965 Plant Biochemistry, eds Academic Press, London, UK, p 578
3. Abscisic Acid Stimulation of Suberization
4. 1967 Yams, ed Longman, London, UK.
5. 1976 The origins and domestication of yams in Africa. In: Origins of African Plants Domestication, ed Academic Press, World Anthropology, Mouton, The Hague, The Netherlands, pp 385–408.