HARPER, G.H. 2005. Biology of Apples and Pears. John E. Jackson. Cambridge: Cambridge University Press. 2003. 500pp. ISBN 0 521 38018 9 (hardback). Edinburgh Journal of Botany. 61, 1 (Jan. 2005), 93–95. DOI:https://doi.org/10.1017/S0960428604250077.