(3MbjHI GdLQhfi (B/ s - (3YHOGdMejO Jhajbs; (3YGWa YHOGdQTjOs; (3SejQ YHOGdNGdb (B((3QShe(B)s ([S.N] : (3SajQ , s, 1990)
Keywords: (3GdGWaGds; (3JYdjes; (3GdhSGFd GdJYdjejIs; (3GdMQha GdGHLOjIs