<div class="description">
<p>M. M. Leighton's thesis (PH. D.) - University of Chicago, 1916
</p>
<br>Subjects: Geology -- Iowa; Drift</div>
<div class="fn value">
<dl><dd>Alden, William C. (William Clinton), b. 1871</dd>
<dd>Leighton, Morris M</dd></dl></div>
Internet Archive identifier