Contributions:

en-N This user can read and write at a native level in English.
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es-3 Este usuario puede contribuir con un nivel avanzado de español.
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This user contributes using
Microsoft Windows XP.
java-3 This user is an advanced programmer in Java.
This user is addicted to video games.
This user thinks wikibooks will be the next great project.



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To do:
Number Theory book editing