HARPER GH. Biology of Apples and Pears. John E. Jackson. Cambridge: Cambridge University Press. 2003. 500pp. ISBN 0 521 38018 9 (hardback). Edinburgh J. Bot. [Internet]. 2005 Jan. 5 [cited 2026 Sep. 3];61(1):93-5. Available from: https://journals.rbge.org.uk/ejb/article/view/1130