Authors: DRAPER MA SECOR GA GUDMESTAD NC

Citation: Ma. Draper et al., FIRST REPORT OF POTATO POWDERY SCAB, CAUSED BY SPONGOSPORA-SUBTERRANEA F-SP SUBTERRANEA IN NORTH-DAKOTA, Plant disease, 81(6), 1997, pp. 693-693

Authors: WALLA JA ASH CL DRAPER MA

Citation: Ja. Walla et al., ASH YELLOWS IN GREEN ASH IN NORTH-DAKOTA, Plant disease, 78(4), 1994, pp. 432-432

Authors: DRAPER MA WALLA JA

Citation: Ma. Draper et Ja. Walla, 1ST REPORT OF CRONARTIUM-RIBICOLA IN NORTH-DAKOTA, Plant disease, 77(9), 1993, pp. 952-952