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  • [°­ÀÇ]201113.ÀÏÀϸðÀÇ°í»ç 20¹ø¹®Á¦
  • 2020-11-13
¾È³çÇϼ¼¿ä. 201113 ÀÏÀϸðÀÇ°í»ç 20¹ø ¹®Á¦¿¡¼­ 2¹ø¹®Ç× 
"It was not until the early 1990s that the tools for analysing the information was available." 
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