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エレベーターピッチがビジネスに不可欠な理由

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Published on Dec 9, 2014

エレベーターピッチ研究会 http://www.elevator-pitch.jp/
『15秒で口説く エレベーターピッチの達人』祥伝社
http://www.amazon.co.jp/15%E7%A7%92%E...

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