<div class="description">
<dl><dd>One chart on 1 folded leaf</dd>
<dd>"Reproduced by Branch of Mineral Classification, Rocky Mountain Region."--Added t.p</dd></dl><br>Subjects: Geology, stratigraphic</div>
<div class="fn value">
<dl><dd>McKelvey, V. E. (Vincent Ellis), 1916-</dd>
<dd>Geological Survey (U.S.)</dd></dl></div>
Internet Archive identifier