(3caGM GdLRGFQ (B:s (3ef NdGd GdhKGFb (B/s - (3HhYRjR, jMjs ((3GdLRGFQ (B:s (3GdeDSSI GdhWfjI ddcJGH ,s, 1986)
Keywords: (3GdGSJYeGQ GdaQfSj s; (3GdGejQ YHO GdbGOQ s; (3GdOhdI GdYKeGfjIs; (3RYeGA GdebGheI s