(3GdGdaHGA GdeUhQ h GdGQbGe (B/ s - (3GdTGQhfj, jYbhHs ((3HjQhJ (B:s (3ecJHI dHfGf,s, 1983)
Keywords: (3dZI YQHjIs; (3OQGSI hJOQjSs; (3GdQjGVjGJs