(3bhI GdOhdI(B:(3OQGSI LjhSJQGJjLjI (B/ s - (3YeQ GdaGQhb GdSjO QLHs ([S.N] : (3ecJHI eOHhdi , s, 1992)
Keywords: (3JGQjNs; (3GdOhdIs; (3GdMOhO GdSjGSjIs; (3GdbhGJ GdeSdMIs; (3SjGOI GdOhdIs