(3WQb GdHMK GdYdej aj GdJGQjN hGdBKGQ (B/ s - (3HGbQ, Wgs; (3MejO, YHO GdYRjRs ((3GdehUd (B:s (3ecJHI OGQ GdcJH ddWHGYI hGdfTQ,s, 1980)
Keywords: (3GdCHMGKs; (3GdJGQjNs; (3GdBKGQs