Waris, M.; Haq, I. ul; Khan, S. A.; Iqbal, M.; Shoaib, M.; Ullah, Z. SCREENING OF CUCUMBER VARIETIES AGAINST DOWNY MILDEW (PSEUDOPERONOSPORA CUBENSIS) AND ITS CHEMICAL MANAGEMENT. Pak. J. Phytopathol. 2014, 26, 21-24.