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自由知识文化日历/1 月 30 日
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来自维基教科书，开放世界中的开放书籍
2001 年的今天，佩卡·希马内 (Pekka Himanen) 编著的《黑客伦理》出版。
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图书：自由知识文化日历
华夏公益教科书
