Combinatorics 79 

 - Amsterdam :  North-Holland Pub. Co,  1980 
 - 2v. :  ill. ;  23 cm. 
 - Annals of discrete mathematics ;  8 .
<br/><br/> part I and part II 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis<br/>Graph theory