Yothers, M.A. <br/><br/>
Biology and control of tree hoppers injurious to fruit trees in the pacific northwest  / 
by M.A., Yothers 
 - Washington, D.C.  :   USDA 
 - 46 p. 
 - Technical bulletin, 402 .
<br/><br/> Encuadernado con : Orchard insects... / by E.J. Newcomer 
<br/><br/><label>LCCN: </label>200802 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Arboles -- plagas <br/>Arboles frutales -- plagas <br/>Control biológico de plagas
<br/><br/><label>Dewey Class. No.: </label>PA-C 634 N4 1933