Pultr, Ales <br/><br/>
Combinatorial algebraic and topological representations of groups, semigroups and categories / 
by Ales Pultr, Vera Trukova 
 - Amsterdam :  North-Holland Publishing Company,  1980 
 - 372 p. :  ill. ;  22 cm. 
 - North-Holland Mathematical Library ;  no.22 .
<br/><br/>Bibliography : p.353-365 - Index 
<br/><br/><label>ISBN: </label>044485083X 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Combinatorial analysis<br/>Combinatorial geometry<br/>Combinatorial topology