zoom-out Zoom Out zoom-in Zoom In invert Invert cursor Bigger Cursor brightness Brightness contrast Contrast monochrome Grayscale revert Undo Changes العوامل المحددة لأثر البرنامج الارشادى لزراعة علف الفيل بمحافظ أسيوط Research Department Department of Rural Sociology and Agricultural Extension Research Member Ahmed Mohamed Ahmed Saleh