TY  - BOOK
AU  - Maddux, Roger D
TI  - Relation algebras
SN  - 9780444520135
U1  - 511.324 MAD 
PY  - 2006///
CY  - Amsterdam
PB  - Elsevier
KW  - Relation algebras
N1  - Includes bibliographical references and index
ER  -