(3GdfHDI hGdSjGSI GdGfLdjhf GdYScQjhf ai GdWQjb Gdi GdMQH GdfhhjI (B/ s - (3eMeO GdSeGcs; (3gGSd (B, (3ZQjSs ([S.N] : (3LeYjI GdOYhI GdGSdGejI GdYGdejI , s, 1990)
Keywords: (3GdhdGjGJ GdeJMOI GdGeQjcjIs; (3GdSjGSI GdOhdjIs; (3GSQGFjds; (3GdchfLQSs; (3GdjghO ai GdhdGjGJ GdeJMOI GdGeQjcjIs