TY  - BOOK
AU  - Gratzer,George A.
TI  - Universal algebra
SN  - 0-387-90355-0
U1  - 512 
PY  - 1979///
CY  - New York
PB  - Springer-Verlag
KW  - Algebra, Universal
N1  - Includes index; Bibliography: p. 475-563
ER  -