<div class="description">
<dl><dd>Circular No. 93, Revised</dd>
<dd>"Issued June 23, 1909."</dd>
<dd>At head of title: United States Department of Agriculture, Bureau of Entomology</dd>
<dd>Distribution in the United States. pp. 1</dd>
<dd>The relation of temperature to destructive outbreaks. pp. 3</dd>
<dd>Food plants. pp. 5</dd>
<dd>Invasion of 1907. pp. 7</dd>
<dd>Development and influence of Lysiphlebus tritici. pp. 15</dd>
<dd>Experiments in destroying "Green bugs" over small areas. pp. 19</dd>
<dd>Agricultural methods of control. pp. 20</dd>
<dd>The present "Green bug" situation in the Southern States, May 1, 1909. pp. 21</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