TY  - BOOK
AU  - Gratzer,George A.
TI  - Lattice theory: first concepts and distributive lattices 
SN  - 0716704420
U1  - 512.7 
PY  - 1971///
CY  - San Francisco
PB  - W. H. Freeman
KW  - Lattice theory
KW  - Lattices, Distributive
N1  - Includes index; Bibliography: p. [193]-205
ER  -