(3GdcJGH GdKGfi (B2(3L (B/ s - (3gfQi(B, (3GOehfOs; (3HgjI cQe (B((3eJQLe(B)s ([S.N] : (3ecJHI dHfGf , s, 1980)
Keywords: (3GdYdeGAs; (3GdWHs; (3GdGWaGds; (3GdcgQHGAs; (3Gdadcs; (3GdYdhes; (3GdPQGJs