Asa Lansford Foster
... that Asa Lansford Foster was among the leading experts on the geology of the Coal Region in Pennsylvania?
... that <b id="mwBGg"><a href="./Asa_Lansford_Foster" id="mwBGk" rel="mw:WikiLink" title="Asa Lansford Foster">Asa Lansford Foster</a></b> was among the leading experts on the geology of the <a href="./Coal_Region" id="mwBGo" rel="mw:WikiLink" title="Coal Region">Coal Region</a> in Pennsylvania?