antigeek 发表于 2012-12-6 23:03

Download NASA eBooks free of charge!

Go to this website:
http://www.nasa.gov/connect/ebooks/

You can download a lot of NASA ebooks free of charge!(Three formats: EPUB/MOBI/PDF available)


antigeek 发表于 2012-12-6 23:25

I've already downloaded a 202-page free PDF book ModelingFlight (a book talks about NASA's model airplane and model aircraft).


antigeek 发表于 2012-12-12 00:27

不好意思歸錯類了，本主題應該放在「電子書」而非「天文軟體」的分類。

astrowalker 发表于 2013-4-19 16:31

anyway, thanks alot
页: [1]
查看完整版本: Download NASA eBooks free of charge!