<div class="description">
<dl><dd>Thesis (Ph. D.)--Johns Hopkins university, 1909</dd>
<dd>Life</dd>
<dd>Reprinted from Maryland geological survey [report] vo. IX, 1910</dd></dl><br>Subjects: Iron ores; Iron industry and trade</div>
<div class="fn value">
Singewald, Joseph T. (Joseph Theophilus), 1884-1963</div>
Internet Archive identifier