Ohcanbohtosat - Han'guk Int'ŏnet Chinhŭngwŏn

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    2004 survey on the wireless internet use Dahkki Han'guk Int'ŏnet Chinhŭngwŏn

    Almmustuhtton 2004
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    Bearbmagovva

    Survey on the computer and internet usage 2005.2 Dahkki Han'guk Int'ŏnet Chinhŭngwŏn

    Almmustuhtton 2005
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