(3af GdGdbGA GdYQHi GdNWGHi hGdJeKjdi (B/ s - (3aGQhb SYOs ([S.N] : (3OGQ GdcJGH GddHfGfi , s, 1987)
Keywords: (3GdHdGZI GdYQHjIs; (3GQJLGd GdJeKjds; (3GdNWGHI GdYQHjIs; (3GQJLGd GdNWHs