(3GdJWhQ GdJGQjNi ddGfXeI GdfbOjI ai GdGbWGQ GdYQHjI (B/ s - (3YHOGdefYe GdSjO Ydi s; (3YHOGdefYe GdSjO Ydis ([S.N] : (3eQcR OQGSGJ GdhMOI GdYQHjI , s, 1983)
Keywords: (3GdYGde GdYQHis; (3JGQjNs; (3GdSjGSI GdeGdjIs; (3GdfbhOs; (3GdHfhcs