Gratzer,George <br/><br/>
Lattice Theory   : first Concepts and distributives lattices 
/ by George Gratzer 
 - san francisco  W.H. Freeman and Company  1971 
 - x,212p. 
<br/><br/><label>ISBN: </label>0-7167-0042-0 
<br/><br/><label>Dewey Class. No.: </label>512.865  / GRA/L