(3GdNQhL ef GdGReI (B: (3OQGSGJ ai GdSjGSI GdGbJUGOjI hGdeLJeY GdeUQi (B/ s - (3Ydi YHOGdYRjR SdjeGfs ([S.N] : (3YGde GdcJH GdMOjK , s, 1989)
Keywords: (3eUQs; (3GdGbJUGOs; (3GdSjGSIs; (3GdOjhfs; (3GdHjQhbQGWjIs; (3GdaSGO GdGOGQis; (3TQcGJ GdGSJKeGQs