2014. Dispersal and Development of Powdery Mildew Disease Caused by Oidiopsis haplophylli on Ornamental Plants (Nasturtium) Tropaeolum majus L. in Baghdad. Baghdad Science Journal. 11, 2 (Jun. 2014), 789–794. DOI:https://doi.org/10.21123/bsj.2014.11.2.789-794.