(3abg GdfGaY (B/s - (3GdSeQbfOj, eMeO Hf jhSa Hf eMeO,s (3J(B. 556 (3g`(B.s; (3GdYHhO, EHQGgje Hf MeOs ((3GdQjGV (B:s (3ecJHI GdYHjcGf,s, 2000)
Keywords: (3Gdabg GdMfajs