EPIDEMIOLOGY Determination of some virulent and epidemic factors related to wheat Septoria leaf blotch. A Abdel Ghani, M. Abou Shaar and M. Kasem (SYRIA) Pages 1-9 SURVEY A survey for some viruses affecting potato in Syria, and serological detection of main strains of Potato virus Y. S. Al-Chaabi, A. R. Darwesh, F. Ismaeil, J. Mando and