Lovasz L Ed. <br/><br/>
Algebraic methods in graph theory.2V. 

 -  1981 
<br/><br/><label>Standard No.: </label>19813 
<br/><br/><label>Source: </label> Textual 
<br/><br/><label>Dewey Class. No.: </label>B44, M1.1-.2