Salem, N., A. Mansour, A. Al-MUsa, and A. Al-Nsour. “Incidence of Prunus Necrotic Ringspot Virus in Jordan”. Phytopathologia Mediterranea 42, no. 3 (December 1, 2003): 275–279. Accessed July 22, 2024. https://oajournals.fupress.net/index.php/pm/article/view/5021.