Newcomer, E. J. <br/><br/>
Orchard insects of the Pacific Northwest and their control  / 
by E. J. Newcomer 
 - Washington  :   Department of Agriculture 
 - 77 p. 
 - EUA. Dep. of Agri. Circular; 270 .
<br/><br/><label>LCCN: </label>203886 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Manzana -- Plagas  Arboles frutales -- Plagas  Pera -- Plagas  Control de plagas