Changes

* [[Frank Harary|Harary, F.]] and Read, R., "Is the Null Graph a Pointless Concept?", ''Graphs and Combinatorics Conference'', George Washington University, Springer-Verlag, New York, NY, 1973.

* [[Frank Harary|Harary, F.]] and Read, R., "Is the Null Graph a Pointless Concept?", ''Graphs and Combinatorics Conference'', George Washington University, Springer-Verlag, New York, NY, 1973.

{{aficionados}}<sharethis />

<br><sharethis />

[[Category:Combinatorics]]

[[Category:Combinatorics]]