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Belanger, R.R., Bushnell, W.R., Dik, A.]., Carver, T.L.W. (eds.). 2002. The Powdery Mildews -A Comprehensive Treatise. APS Press - The American Phyropathological Society. St. Paul, Minesota, USA, 292 pp. ISBN 0-89054-29 l-O.