diff --git a/source/vocab/libris-search-experimental.ttl b/source/vocab/libris-search-experimental.ttl
index 70949467..8ed2c3eb 100644
--- a/source/vocab/libris-search-experimental.ttl
+++ b/source/vocab/libris-search-experimental.ttl
@@ -50,6 +50,9 @@
     skos:notation "FÖRF"^^ls:QueryCode ;
     skos:notation "FORF"^^ls:QueryCode .
 
+:bibliography # See ./agents.ttl for full definition of :bibliography
+    skos:notation "DB"^^ls:QueryCode .
+
 # NOTE: Old webbsök code 'author' was same as 'FÖRF'
 :author a owl:ObjectProperty ;
     :category :searchfilter, ls:preferLike, :shorthand, :pending ;