(3GdEKHGJ GdLfGFj OQGSI JMdjdjI dJMOjO ehWf GdbhI hGdVYa ai GdOdjd GdLfGFj (B/s - (3CHh GdYdG Ydi CHh GdYdG GdfeQs ((3GdbGgQI (B:s (3OGQ GdfgVI GdYQHjI,s, 1991)
(3jTJed Ydi EQLGYGJ HHdjhLQGajI(B.s
Keywords: (3GdbGfhf GdLfGFjs; (3GdEKHGJ GdLfGFjs; (3GdOdjd GdLfGFjs