(3eYLe GdGWaGd GdeUhQ (B((3GdGhd(B) / s - (3eGcfdi(B, (3Ls; (3GQjJhf (B. (3Q (B((3QShe(B)s ([S.N] : (3ecJHI dHfGf , s, 1980)
Keywords: (3GdGWaGds; (3GddZI GdYQHjIs; (3GdeYGLes