(3COH CeQjcG GddGJjfjI (B: s (3bVGjG h eTcdGJ (B/ s - (3ehQfjh, SjRGQ aQfGfOKs; (3YHO GdhGMO, CMeO MSGfs ((3GdchjJ (B:s (3GdeLdS GdhWfj ddKbaI h Gdafhf h GdBOH,s, 1987)
Keywords: (3GdCOH GdCejQcj GddGJjfjs; (3GdfbO GdCOHjs