(3YHOGdQGRb GdSfghQi ef NdGd GhQGbg GdTNUjI (B/ s - (3fGOjI GdSfghQis; (3Jhajb GdSfghQis ([S.N] : (3GdRgQGA ddGYdGe GdYQHi , s, 1988)
Keywords: (3eUQs; (3GdbVGIs; (3YHOGdQGRb GdSfghQis