(3JGQjN GdYGde(B: (3GdJQLeI GdYQHjI GdbOjeI (B((3efJUa GdbQf GdQGHY GdgLQi(B)s ([S.N] : (3GdeDSSI GdYQHjI ddOQGSGJ hGdfTQ , s, 1982)