(3GdeQCI aj YUQ GdeZhd (B/ s - (3ejSQG, QjNGs; (3GdLhGQfI, CMeOs ((3GQHO (B:s (3OGQ GdcfOj ddfTQ hGdJhRjY,s, 1998)
Keywords: (3GdeQCIs; (3GdeZhds; (3GdMjGI GdELJeGYjIs