(3ehShYI GdJeQjfGJ GdHOfjg (B/ s - (3HQge, YHO GdefYe SdjeGfs; (3TMGJg, eMeO EHQGgjes; (3fhjQGf, LGHQ SdjeGfs ((3YeGf (B:s (3GdeDdahf,s, 1989)
Keywords: (3GdJeQjfGJ GdQjGVjIs