Selman, Alan L. <br/><br/>
Structure in complexity theory.   

 - Berlin  Springer-Verlag  1986 
 - 400p 
 - Lecture notes in cpmputer science  223 .
<br/><br/><label>ISBN: </label>3540164863 
<br/><br/><label>Dewey Class. No.: </label>511.8  / N863