TY  - BOOK
AU  - Bhaskara Rao, Siddani
TI  - 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 
U1  - 511.5 
PY  - 1970///
CY  - Calcutta
PB  - Indian Statistical Institute
ER  -