(3GdcdeGJ (B/ s - (3YQGH, cGed GdgGOjs ((3WQGHdS (B( (3djHjG (B) :s (3GdefTCI GdYGeI ddfTQ h GdJhRjY h GdEYdGf,s, 1986)
Keywords: (3GdCOH GdYQHjs; (3GdfbO GdCOHjs