Gratzer, George <br/><br/>
Universal algebra   

 - 2nd 
 - New York  Springer-Verlag  1979 
 - xviii, 581p. Index. Bibl. 
<br/><br/> "Originally published in the University series in Higher Mathematics"   
<br/><br/><label>Dewey Class. No.: </label>512  / G773.UA