TY  - BOOK
AU  - Gratzer, George
TI  - Lattice theory: Foundation
SN  - 9783034800174
U1  - 511.33 
PY  - 2011///
CY  - Berlin
PB  - Springer
KW  - Congruence relations
KW  - Structure theorems
KW  - Distributive Lattices
ER  -