This webpage has alternate versions available in Serbian via the use of the hreflang tag.
https://support.google.com/webmasters/answer/189077?hl=en
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Get access to data on 180,133 websites that are Serbian HREF LANG Customers. We know of 95,775 live websites using Serbian HREF LANG and an additional 84,358 sites that used Serbian HREF LANG historically and 39,482 websites in the United States.
Get a list of 180,133 websites using Serbian HREF LANG which includes location information, hosting data, contact details, 95,775 currently live websites and an additional 186,978 domains that redirect to sites in this list. 84,358 sites that used this technology previouslyand 39,482 websites in the United States currently using Serbian HREF LANG.
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