<div class="description">
<dl><dd>Circular No. 93</dd>
<dd>"Issued August 22, 1907."</dd>
<dd>At head of title: United States Department of Agriculture, Bureau of Entomology</dd>
<dd>Distribution in the United States -- The relation of temperature to destructive outbreaks. pp. 2</dd>
<dd>Alternative or summer food plants. pp. 4</dd>
<dd>Invasion of 1907. pp. 6</dd>
<dd>Seasonal development and habits of Lysiphlebus. pp. 13</dd>
<dd>Experiments in destroying "Green bugs" over small areas. pp. 15</dd>
<dd>Agricultural methods of control. pp. 16</dd></dl><br>Subjects: Greenbug; Aphids Toxoptera; Grain Diseases and pests; Agricultural pests</div>
<div class="fn value">
<dl><dd>Webster, F. M. (Francis Marion), 1849-1916</dd>
<dd>United States. Bureau of Entomology</dd>
<dd>United States. Dept. of Agriculture</dd></dl></div>
Internet Archive identifier