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日期:2024-08-12
The World Telecommunication/ICT Indicators Database Online Service contains time series data for the years 1960, 1965, 1970 and annually from 1975 to 2013 ......
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日期:2024-08-12
Manual for Measuring ICT Access and Use by Households and Individuals 2014. ... ITU World Telecommunication/ICT Indicators database 2014 (December ......
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日期:2024-08-06
The World Telecommunication/ICT Indicators Database on CD-ROM contains time series data for the years 1960, 1965, 1970 and annually from 1975 to 2013 ......