http://fa.wikibooks.org/wiki/%D8%B3%D8%B9%D8%AF%DB%8C/%DA%AF%D9%84%D8%B3%D8%AA%D8%A7%D9%86 has been crawled 36 times going all the way back to June 29, 2006.

A crawl can be a duplicate of the last one. It happens about 25% of the time across 420,000,000 websites. FAQ
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February 9, 2010

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Note

This calendar view maps the number of times http://fa.wikibooks.org/wiki/%D8%B3%D8%B9%D8%AF%DB%8C/%DA%AF%D9%84%D8%B3%D8%AA%D8%A7%D9%86 was crawled by the Wayback Machine, not how many times the site was actually updated. More info in the FAQ.