Jack Souther
... that American Canadian scientist Jack Souther contributed significantly to the early understanding of Quaternary volcanism in Canada?
... that <a class="mw-redirect" href="./American_Canadian" id="mwgQ" rel="mw:WikiLink" title="American Canadian">American Canadian</a> scientist <b id="mwgg"><a href="./Jack_Souther" id="mwgw" rel="mw:WikiLink" title="Jack Souther">Jack Souther</a></b> contributed significantly to the early understanding of <a href="./Quaternary" id="mwhA" rel="mw:WikiLink" title="Quaternary">Quaternary</a> <a href="./Volcanism" id="mwhQ" rel="mw:WikiLink" title="Volcanism">volcanism</a> in Canada?