Approximate distribution of the Silesian language in the Silesian and Opole Voivodeships
<a href="//commons.wikimedia.org/wiki/User:Gaj777" title="User:Gaj777">Kamil Czaiński</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>, based on information included in <a rel="nofollow" class="external free" href="http://ibrbs.pl/mediawiki/index.php/Etnolekt_g%C3%B3rno%C5%9Bl%C4%85ski">http://ibrbs.pl/mediawiki/index.php/Etnolekt_g%C3%B3rno%C5%9Bl%C4%85ski</a>