Jun 05 2009

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Libros de texto gratuitos y con anuncio

Me parece una tendencia en aumento y que puede muy bien representar lo que será el futuro de los libros de texto:

Bookboon provides online textbooks for students in PDF format. The free ebooks can be downloaded without registration. Our books are legal and written exclusively for Bookboon. They are financed by a few in-book ads.


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