Hugo Stoltzenberg
...that Hugo Stoltzenberg developed the poison gas used at the 1915 Battle of Ypres during World War I?
...that <b id="mwB94"><a href="./Hugo_Stoltzenberg" id="mwB98" rel="mw:WikiLink" title="Hugo Stoltzenberg">Hugo Stoltzenberg</a></b> developed the <a class="mw-redirect" href="./Poison_gas_in_World_War_I" id="mwB-A" rel="mw:WikiLink" title="Poison gas in World War I">poison gas</a> used at the <a href="./Second_Battle_of_Ypres" id="mwB-E" rel="mw:WikiLink" title="Second Battle of Ypres">1915 Battle of Ypres</a> during <a href="./World_War_I" id="mwB-I" rel="mw:WikiLink" title="World War I">World War I</a>?