Bhaskara Rao, Siddani <br/><br/>
Contributions to the theory of directed and undirected graphs  : a thesis submitted to the Indian Statistical Institute in partial fulfilment of the requirements for the award of the degree of Doctor of Philosophy / 

 - Calcutta:  Indian Statistical Institute,  1970 
 - 152p. 
<br/><br/><label>Dewey Class. No.: </label>511.5  / B575.CT