(3GdCNJUGU HGdaUd aj UMI YVhjI CYVGA eLdS GdTYH (B:s - (3eMSf GdYHhOj(B.s ((3OGQ GdfgVI GdYQHjI (B:s (3GdbGgQI(B,s, 1990)
(3jMJhj Ydj GQLGYGJ HHdjhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3eLdS GdTYH(B.s