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mei guo huang se dian hua cheng zai
Author(s): 
Pages: 40
Year: Issue:  8
Journal: World Vision

Keyword:  电话机电话局黄色电话线路美国人委员会纽约统计宣传联邦;
Abstract: <正> 据统计,1984年美国电话机总数已达一亿八千五百万部,居世界首位,平均每千人中约有七百八十七部电话。然而,随着电话机的
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