(3GdJYdjb Ydi bGfhf GdYbhHGJ ai VhA GdabI h GdbVGA (B/ s - (3eUWai eLOi gQLIs ([S.N] : (3OGQ GdeWHhYGJ GdLGeYjI , s, 1987)
Keywords: (3GdbGfhfs; (3bGfhf GdYbhHGJs; (3Gdabg GdGSdGeis