<div class="fn value">
Unknown author<span style="display: none;">Unknown author</span></div>
vol. 2 of the 4th edition of <a href="https://en.wikipedia.org/wiki/Meyers_Konversations-Lexikon" class="extiw" title="en:Meyers Konversations-Lexikon">Meyers Konversations-Lexikon</a>