Hayes, R.M. and Erickson, T.Added Value as a Function of Purchases of Information Services [ J].Information Society, 1982, (1).307-308.是什么意思_Hayes, R.M. and Erickson, T.Added Value as a Function of Purchases of Information Services [ J].Information Society, 1982, (1).307-308.在线翻译_英语_读音_用法_例句