00446nam a2200097Ia 4500008004100000082002700041245006600068260004500134505015100179700001800330220204s9999    xx            000 0 und d  a581.2:635.054(06)bHEY 0aResistance to diseases and pests in forest trees: Proceedings  aWageningenbCentre for Ag Pub Docnc1982  aProceedings of the third international workshop on the genetics of host parasite interactions in forestry Wageningen, the Netherlands, 14-21, 1980  aHEYBROEK, H M