(3GdYdGbGJ GdSjGSjI Hjf GdEeHQGWhQjI GdQheGfjI GdebOSI h GdTQb GdESdGej (B1152-1250(3e(B/ 547-648(3g` (B/ s - (3TMGJg, YGOd YHO GdMGaX YKeGf MeRIs ((3GdbGgQg (B:s (3ecJHI eOHhdj,s, 1986)
Keywords: (3GdJGQjN GdMOjKs; (3GdYUhQ GdhSWis; (3JGQjN ChQhHG GdMOjKs