(3GQSWh OYhI ddadSaI (B: s (3OYhI ddadSaI (B( (3HQhJQ jHJjbhS (B) / s - (3GQSWhWGdjSs; (3YHOGdZaGQ ecGhis ((3GdbGgQI (B: s (3GdgjFI GdeUQjI GdYGeI ddcJGH , s, 1987)
Keywords: (3GdadSaIs; (3adSaI GQSWhs; (3GdadGSaIGdjhfGfjhfs; (3GdadSaI GdjhfGfjIs; (3GdadGSaI GdeSdehfs; (3GdadGSaIs; (3GdadSaI GdZQHjIs