Blanchard, R. A. <br/><br/>
Burning for the control of aphids on alfalfa in the Antelope valley of California  / 
by R. A. Blanchard, H. B. Walker and O. K. Hedden 
 - Washington  :   Department of Agriculture 
 - 24 p. 
 - EUA. Dep. of Agri. Circular' 287 .
<br/><br/><label>LCCN: </label>203880 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Quema de tierras  Control de plagas  Alfalfa -- Plagas