(3efgL GdLOd hGdefGXQI aj JbQjQ eSGFd GdGYJbGO (B/s - (3MSf, YKeGf Hf Ydjs ((3GdQjGV (B:s (3OGQ ETHjdjG ddfTQ hGdJhRjY,s, 1999)
(3GdCUd CWQhMI OcJhQGg(B.s
Keywords: (3Yde GdcdGes