Copyright, copyleft and everything in and between

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南非一個 learning commons 的組織, 寫了一套教材給高中老師, 幫助他們於課堂上教學生有關版權的討論和互聯網中的另類版權實踐: copyright, copyleft and everything in and between. 給老師的指引可以網上下載.