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-rw-r--r--doc/src/sgml/biblio.sgml4
1 files changed, 2 insertions, 2 deletions
diff --git a/doc/src/sgml/biblio.sgml b/doc/src/sgml/biblio.sgml
index d85e3f0a24a..204970c2778 100644
--- a/doc/src/sgml/biblio.sgml
+++ b/doc/src/sgml/biblio.sgml
@@ -145,8 +145,8 @@
</biblioentry>
<biblioentry id="ULL88">
- <title>Principles of Database and Knowledge</title>
- <subtitle>Base Systems</subtitle>
+ <title>Principles of Database and Knowledge-Base Systems</title>
+ <subtitle>Classical Database Systems</subtitle>
<titleabbrev>Ullman, 1988</titleabbrev>
<authorgroup>
<author>