(3GdMjGI GdHQRNjI (B:s (3hef hQGFge HQRN Edi jhe jHYKhf (B/s - (3YHO GdebUhO , CTQa s ((3GdbGgQI (B:s (3ecJHI GdJQGK GdESdGej,s, 1988)
Keywords: (3GdebGHQs; (3jhe GdbjGeIs