ASDIC display in Berlin Museum of Technology
<a href="//commons.wikimedia.org/w/index.php?title=User:%C3%84DA_-_D%C3%84P&amp;action=edit&amp;redlink=1" class="new" title="User:ÄDA - DÄP (page does not exist)">ÄDA - DÄP</a>
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<span class="int-own-work" lang="en">Own work</span>