Averett, Ellen Penny <br/><br/>
The development of an instrument to assess depression vulnerability. 
by Ellen Penny Averett. 
 - n.p.  s.n.  1984. 
 - viii, 135 leaves, forms 
<br/><br/> Typescript  Thesis (Ph.D.) Duke University, 1984 
<br/><br/>Bibliography : leaves 128-134