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math + (4)
education + (4)


Users that often use this tag:
Upton O'Good (2)
Wolfdog (2)

Open Text Book: a blog which lists freely-available online textbooks. [more inside]
posted by Upton O'Good on Oct 25, 2007 - 12 comments

A Beginner's Guide to Aeronautics, a web-based textbook brought to you by the folks at NASA. [more inside]
posted by Upton O'Good on Oct 21, 2007 - 8 comments