Map of Chaco War in Spanish.
<a href="//commons.wikimedia.org/w/index.php?title=User:Anibalcesar&amp;action=edit&amp;redlink=1" class="new" title="User:Anibalcesar (page does not exist)">Anibalcesar</a>, vector: <a href="//commons.wikimedia.org/wiki/User:MacedonianBoy" title="User:MacedonianBoy">MacedonianBoy</a>
CC BY-SA 4.0
<span class="int-own-work" lang="en">Own work</span>