(3GdeOef GfG (B: (3QMdI ai YGde GdeNOQGJ hYUGHGJ GdegQHjf (B/ s - (3YHOGddg YeQ NjGWs ([S.N] : (3hcGdI GdGgQGe ddJhRjY , s, 1989)
Keywords: (3GdeNOQGJ hGdTHGHs; (3GdeNOQGJs; (3GdGjORs; (3GdGOeGfs