Nice work! Long live free knowledge.

- Karthikeyan A K
> On 11-Mar-2017, at 10:24 PM, SEKI Masatoshi <seki.at.druby.org / gmail.com> wrote:
> 
> 
> The dRuby Book is out of print, so I've re-published it on the web.
> 
> - http://www.druby.org/sidruby/the-druby-book.html
> - http://www.druby.org/sidruby/what-readers-are-saying-about-the-druby-book.html
> 
> 
> 
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