Bernhard Hantzsch
... that the early 20th-century diaries of German ornithologist Bernhard Hantzsch influenced British Arctic explorer Pen Hadow?
... that the early 20th-century diaries of German <a href="./Ornithology" id="mwEFs" rel="mw:WikiLink" title="Ornithology">ornithologist</a> <b id="mwEFw"><a href="./Bernhard_Hantzsch" id="mwEF0" rel="mw:WikiLink" title="Bernhard Hantzsch">Bernhard Hantzsch</a></b> influenced British <a class="mw-redirect" href="./Arctic_explorer" id="mwEF4" rel="mw:WikiLink" title="Arctic explorer">Arctic explorer</a> <a href="./Pen_Hadow" id="mwEF8" rel="mw:WikiLink" title="Pen Hadow">Pen Hadow</a>?