(3GdGbJUGO Gdcdj (B:s (3GdfXQjI hGdSjGSI (B/s - (3eGjcd, GHOLeGfs; (3eMeO GHQGgje efUhQs; (3YHO GdaJGM YHO GdQMefs; (3SdWGf GdeMeO GdSdWGfs ((3GdQjGV (B:s (3OGQ GdeQjN GdfTQ(B,s, 1988)
Keywords: (3GdeGdjI GdYGeI hGdJTQjY GdVQjHjs