Ore, Oystein,  1899-1968. <br/><br/>
Graphs and their uses / 
by Oystein Ore. 
 - [Washington, D.C.] :  Mathematical Association of America,,  1963. 
 - vii, 131 p. :  ill. 
 - New mathematical library,  10. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Graphic methods.