(3JNWjW HQGeL JQHjI GdWad hJWhjQgG (B/ s - (3GdRHGOj , GMeO eMeO s ((3YeGf (B: s (3OGQ GdKbGaI ddfTQ , s, 1990)
Keywords: (3JYdje GdGWaGd s