Semigroups :  structure and universal algebraic problems / 
edited by G. Pollak et al. 
 - Amsterdam :  North-Holland,  1985. 
 - 501 p. 
 - Colloquia mathematica Societatis János Bolyai  39 .
<br/><br/> Inventory Control Project record. 
<br/><br/><label>ISBN: </label>0444875530 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Semigroups