Gratzer, George <br/><br/>
Lattice Theory  First Concepts and Distributive Lattices 
George Gratzer 
 - San Francisco  W. H. Freeman and Company  1972 
 - 212 p  ill  23 cm 
 - A Series of Book in Mathematics .
<br/><br/> Contine bibliografie si index 
<br/><br/><label>ISBN: </label>716704420