Hill, C. C <br/><br/>
A method of estimating reduction in yield of wheat caused by Hessian fly infestation  / 
by C. C. Hill, E. J. Udine and J. S. Pinckney 
 - Washington  :   Department of Agriculture 
 - 10 p. 
 - EUA. Dept. of Agriculture Circular; 663 .
<br/><br/><label>LCCN: </label>202916 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Trigo -- Plagas  Phytophaga destructor