Layaoen, Thelma Z.  <br/><br/>
Microbial control of earworm, Helicoverpa armigera (Hubner) using beauveria bassiana (Bals.) Vuill and Bacillus Thuringiensis Sub Sp. Thuringiensis Berliner  
Thelma Z. Layaoen  
 -  1979 
 - xiii, 100 leaves   28 cm. 
<br/><br/> Thesis (MS Entomology) -- University of the Philippines, Los Baņos, Laguna 
<br/><br/>Bibliography: leaves 87-96