(3eUGOQ GdEdJRGe (B: s (3GdehLR aj GdfXQjI GdYGeI ddEdJRGe (B/ s - (3SdWGf, CfhQs ((3HjQhJ (B:s (3OGQ GdfgVI GdYQHjI,s, 1983)
Keywords: (3GdYbhOs; (3GdbGfhf GdeOfjs; (3GdEdJRGeGJs