Roark, R. C. <br/><br/>
Adulteration of insect powder with powdered daisy flowers (Chrysanthemum leucanthemum L.)  / 
by R. C. Roark and G. L. Keenan 
 - Washington  :   Department of Agriculture 
 - 10 p. 
 - EUA. Dep. of Agri. Bull.; 795 .
<br/><br/><label>LCCN: </label>203776 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Insecticidas -- Análisis  Piretro como insecticida