1.
Ruby in a Nutshell A Desktop Quick Reference
by Matsumoto, Yukihiro, Reynol...
ISBN: 9780596002145
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The Ruby Programming Language
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ISBN: 9780596516178
List Price: $39.99
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The Ruby Programming Language: Everything You Need to Know
by Flanagan, David, Matsumoto,...
ISBN: 9780596520168
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The Ruby Programming Language: Everything You Need to Know
by Flanagan, David, Matsumoto,...
ISBN: 9780596554651
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The Ruby Programming Language: Everything You Need to Know
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ISBN: 9780596106911