Creel, C. W <br/><br/>
The control of the clover-flower midge  / 
by C. W. Creel and L. P. Rockwood 
 - Washington  :   Department of Agriculture 
 - 9 p. 
 - EUA. Dept. of Agriculture Farmers'bull.; 971 .
<br/><br/><label>LCCN: </label>203768 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Dasyneura leguminicola  Control de plagas  Trébol -- Plagas