<div class="description">
<dl><dd>"Chart No. 12."</dd>
<dd>"U.S. Department of Agriculture, Soil Conservation Service, March 1939."</dd></dl><br>Subjects: Crop rotation United States Planning Posters; Soil conservation United States Posters; Crop rotation; Soil conservation</div>
<div class="fn value">
United States. Soil Conservation Service</div>
Internet Archive identifier