(3GdJMhdGJ GdSjGSjI ai GdHdOGf GdeNJdaI (B/ s - (3Lhf cGhJScis; (3LeGd fYje Yhfs ([S.N] : (3OGQ GdMbjbI ddWHGYI hGdfTQ , s, 1980)
Keywords: (3GdTjhYjIs; (3GdSjGSI GdOhdjIs; (3GhQHGs