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1Sŭmat'ŭp'on iyong silt'ae chosa스마트폰이용실태조사
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2Musŏn int'ŏnet iyong silt'ae chosa무선인터넷이용실태조사
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3Hanʼguk Intŏnet paeksŏ = Korea Internet white paper한국 인터넷 백서 = Korea Internet white paper한국인터넷백서 = Korea Internet white paper한국 인터넷 백서 = Korea Internet white paperPublished 2000
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