%0 Journal Article %T Host Selectivity and Genetic Variation of Discula umbrinella Isolates from Two Oak Species: Analyses of Intergenic Spacer Region Sequences of Ribosomal DNA %A Cohen, Susan %J Microbial Ecology %V 52 %N 3 %P 463-469 %@ 0095-3628 %D 2006-08-15 %I Springer-Verlag %~ DeepDyve