Атрибут itemscope

itemscope='...'

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<div itemscope itemtype='http://schema.org/books' itemid='urn:isbn:978-5-8459-0082'> 
<div itemprop='name'>Программист</div> 
<div itemprop='author'>Гуляев К. И.
<div itemprop='booksFormat'>HTML</div> 
<div itemprop='numberOfPages'>2</div> 
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