(3eMGVQ GdcfjSJ (B:s (3fUhU eNJGQI ef eMGVQ GdcfjSJ GdSGOS(B/ s ([S.N] : (3eQcR GdOQGSGJ GdSjGSjI hGdGSJQGJjLjI (B- (3GdCgQGe , s, 1977)
Keywords: (3GSQGFjds; (3GdgjFGJ GdJTQjYjIs; (3GdcfjSIs