<div class="description">
<dl><dd>125 pages 27 cm</dd>
<dd>Cover title</dd>
<dd>At head of title: United States Department of Agriculture. Bureau of Chemistry and Soils. Insecticide Division</dd>
<dd>Reproduced from typewritten copy; cover printed</dd></dl><br>Subjects: Insecticides; Insecticides Patents</div>
<div class="fn value">
Roark, R. C. (Ruric Creegan)</div>
Internet Archive identifier