HELFER, S. “Comparative Epidemiology of Plant Diseases. Jürgen Kranz. Berlin: Springer-Verlag. 2003. 206pp. ISBN 3 540 42688 X (hardback)”. Edinburgh Journal of Botany 61, no. 1 (January 5, 2005): 95–96. Accessed September 3, 2026. https://journals.rbge.org.uk/ejb/article/view/1132.