Gustav Laabs
... that German SS-Hauptscharführer Gustav Laabs worked as a gas van operator at the Chełmno extermination camp in Wartheland?
... that German <a href="./Hauptscharführer" id="mwBuc" rel="mw:WikiLink" title="Hauptscharführer">SS-Hauptscharführer</a> <b id="mwBug"><a href="./Gustav_Laabs" id="mwBuk" rel="mw:WikiLink" title="Gustav Laabs">Gustav Laabs</a></b> worked as a <a href="./Gas_van" id="mwBuo" rel="mw:WikiLink" title="Gas van">gas van</a> operator at the <a href="./Chełmno_extermination_camp" id="mwBus" rel="mw:WikiLink" title="Chełmno extermination camp">Chełmno extermination camp</a> in <a href="./Reichsgau_Wartheland" id="mwBuw" rel="mw:WikiLink" title="Reichsgau Wartheland">Wartheland</a>?