【作者(必填)】Martin Hilbert

【文题(必填)】The bad news is that the digital access divide is here to stay: Domestically installed bandwidths among 172 countriesfor 1986–2014


【年份(必填)】(2016),

【全文链接或数据库名称(选填)】http://ac.els-cdn.com/S030859611 ... 3b81c56060e28d6bd7f