Severin, H. C. <br/><br/>
The grasshopper mite :   Eutrombidium (Hermann) an important enemy of grasshoppers  / 
by H. C. Severin 
 - Brookings, South Dakota  :   Agricultural Experiment Station 
 - 35 p. 
 - South Dakota Agri. Exp. Sta. Technical Bull.; 3 .
<br/><br/><label>LCCN: </label>203152 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Chapulines  Eutrombidium