<div class="description">
<dl><dd>Title from cover</dd>
<dd>"July 1949."</dd>
<dd>Errata slip inserted</dd>
<dd>Includes bibliographical references (p. 12)</dd></dl><br>Subjects: Crop rotation; Soil conservation</div>
<div class="fn value">
<dl><dd>Uhland, R. E. (Russel Edward), 1896-</dd>
<dd>United States. Soil Conservation Service</dd></dl></div>
Internet Archive identifier