(3aJGhi hJfHjgGJ hfUGFM (B/s - (3GHf HGR, YHO GdYRjR Hf YHO Gddg Hf YHO GdQMef,s 1332-1420 (3gLQjG(B.s ((3GdbGgQI (B:s (3ecJHI GdSfI,s, 1989)
(3GdYRQj(B.s
Keywords: (3Gdabg GdESdGejs -- (3aJGhis