(3GdJNWjW GdJQHhi(B: (3GWGQ deONd Jfehi LOjO (B/ s - (3GMeO Ydi GdMGL eMeOs ((3GdbGgQI (B: s (3GdeDSSI GdLGeYjI ddOQGSGJ hGdfTQ hGdJhRjY , s, 1992)
Keywords: (3GdJYdjes; (3GdJNWjW GdJQHhis; (3GdJfejI GdGLJeGYjIs