(3GdhLjR aj bGfhf GdefXeGJ GdOhdjI h GdGbdjejI (B/ s - (3SYjO eMeO GMeO HGfGLIs ((3HjQhJ (B:s (3eDSSI GdQSGdI ,s, 1985)
Keywords: (3GdbGfhf GdOhdj GdYGes