(3GdaGX GdGWYeI hGdGTQHI ai cJGH GdGZGfi ddGUagGfi (B/ s - (3QTjOI YHOGdMejO GddbGfis; (3GHhGdaQL GdGUagGfi(B: (3Ydi Hf GdMSjf Hf eMeO Hf GdgjKe YHOGdQMef Hf eQhGf GdHZOGOis ([S.N] : (3OGQ GdeYQaI GdLGeYjI , s, 1991)
Keywords: (3GdGdaGXs; (3GdGTJbGbs; (3GddZI GdYQHjIs