(3bGehS GdeUWdMGJ h GdJYGHjQ GdTYHjI (B/ s - (3CHh SYO, CMeOs ((3HjQhJ (B:s (3ecJHI dHfGf,s, 1987)
Keywords: (3GddZI GdYQHjIs; (3GddgLGJs; (3eYGLe GdeUWdMGJs