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1Int'ŏnet chŏnhwa sijang esŏ ŭi sangp'um ch'abyŏrhwa chŏllyak yŏn'gu /인터넷 전화 시장 에서 의 상품 차별화 전략 연구 /by Chang, Pŏm-jin“...Yŏn'gu pogo (Chŏngbo T'ongsin Chŏngch'aek Yŏn'guwŏn (Korea)) ;...”
Published 2006
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