TY  - BOOK
AU  - Gratzer,George
TI  - Lattice theory: first concepts and distributive lattices 
T2  - A Series of books in mathematics
SN  - 0716704420
U1  - 511.33 22
PY  - 1971///
CY  - San Francisco
PB  - W. H. Freeman and Company
KW  - Lattice theory
KW  - Lattices, Distributive
N1  - Includes bibliographical references (p. 193-205) and index
ER  -