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缺少「下載圖書」鏈接

下載圖書連結不存在的四個可能原因:

  • 沒有整本書的 pdf 可用。對於 2005 年之前在線提供的書刊,我們沒有整本書的 pdf 選項,這些書刊僅供以章節下載。
  • 本書為參考書
  • 本書超過 100 篇章節
  • 本書沒有電子版權;不可購買

這是否有幫助?

發送反饋意見
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