(3GdMb ai GdMHS chSjdI ddVeGf (B((3OQGSI ebGQfI Hjf GdeOfi hGdabg GdGSdGei(B) / s - (3QGaJ eMeO GMeO MeGOs ([S.N] : (3OGQ GdfgVI GdYQHjI , s, 1990)
Keywords: (3GdbGfhfs; (3GdTQjYI GdGSdGejIs; (3Gdabg GdGSdGeis; (3GdbGfhf GdNGUs; (3GdbGfhf GdebGQfs; (3GdMHS GdeDbJs