VAN VALKENBURG, M.E. <br/><br/>
Network analysis 
/M.E.Van Valkenburg 
 - Englewood  Prenice-Hall  1964 
 - xiii, 492 p. 
<br/><br/> Includes appendixes, references and index. 
<br/><br/><label>Dewey Class. No.: </label>621.3815  / VAN