(3aJGhi hJfHjgGJ hfUGFM (B/ s - (3YHOGdYRjR Hf YHOGddg Hf HGR(B((3d(B)s ([S.N] : (3OGQ GdLjd , s, 1991)
Keywords: (3GdGaJGAs; (3Gdabg GdGSdGeis