Gratzer, George A. <br/><br/>
Lattice theory :  first concepts and distributive lattices / 
George Gratzer. 
 - San Francisco :  Freeman,  1971. 
 - ix, 212 p. :  ill. ;  23 cm. 
 - Series of books in mathematics .
<br/><br/> Includes index. 
<br/><br/>Bibliography p. 207-12. 
<br/><br/><label>ISBN: </label>0716704420 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Lattice theory.
<br/><br/><label>Dewey Class. No.: </label>511.33  / GRL 1971