%0 Journal Article %T Contrasting structure of European and North American populations of Ophiostoma ulmi %A Mitchell, A.G. %A Brasier, C.M. %A , %J Mycological Research %V 98 %N 5 %P 576-582 %@ 0953-7562 %D 1994-05-01 %I Elsevier BV %~ DeepDyve