(3GdLeGf ai JTHjgGJ GdbQBf (B/s - (3GHf fGbjG GdHZOGOis ((3eUQ (B:s (3efTCI GdeYGQa LdGd MRi hTQcGg,s, 1978)
(3jTJed Ydi EQLGYGJ HHjdhLQGajI(B.s
(3GdfU HGddZI GdYQHjIs
Keywords: (3GdbQBfs -- (3HdGZIs