(3GdGYQGH hGdJQcjH Hjf GdTcd hGdSfI(B: (3OQGSI JaSjQjI (B/ s - (3eMehO YHOGdSdGe TQa GdOjfs ([S.N] : (3OGQ eQLGf ddWHGYI , s, 1984)
Keywords: (3GdfMhs; (3GddZI GdYQHjIs