Fisher, D. F. <br/><br/>
Controlling important fungus and insect enemies of the pear in the humid sections of the pacific northwest  / 
D. F. Fisher and E. J. Newcomer 
 - Washington  :   Department of Agriculture 
 - 34 p. 
<br/><br/> EUA. Dept. of Agriculture Farmers' bull.; 1056 
<br/><br/><label>LCCN: </label>203754 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Pera -- Enfermedades por hongos  Pera -- Plagas  Control de plagas