Tejada, Luis Orlando. <br/><br/>
Evaluation of the effectiveness of some general predators at different predatos-prey densites, with special reference to their attack on Heliothis zea (Boddie) / 
by Luis Orlando Tejada 
 - Riverside, Cal. :  The author,  1971 
<br/><br/>Tesis (Ph. D.) -- Univ. of California 
<br/><br/><label>LCCN: </label>44552 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Control biológico de insectos.<br/>Heliothis (Helicoverpa) zea.