(3JGQjN GdLZQGajg h GdLZQGajjf aj GdCfOdS (B/ s - (3eDfS, MSjfs ((3GdbGgQg (B:s (3GdeDda,s, 1986)
Keywords: (3GdMVGQg GdGSdGejgs; (3GdLZQGajs; (3JGQjN GdCfOdSs