고령층 방송통신이용자 보호 및 피해예방 정책방안 연구

고령층 방송통신이용자 보호 및 피해예방 정책방안 연구

336 Pages · 2017 · 2.86 MB · Korean
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“ Just as there is no loss of basic energy in the universe, so no thought or action is without its effects, present or ultimate, seen or unseen, felt or unfelt. ” ― Norman Cousins
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