Index: millennium.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/millennium/millennium.module,v
retrieving revision 1.13.2.33.2.2.2.36
diff -u -r1.13.2.33.2.2.2.36 millennium.module
--- millennium.module	30 Oct 2009 22:16:49 -0000	1.13.2.33.2.2.2.36
+++ millennium.module	30 Oct 2009 22:19:16 -0000
@@ -1188,6 +1188,9 @@
     "biblio_custom7" => $biblio["bib_recnum"],
     */
   );
+  
+  // Let other modules add custom bibliographic data
+  drupal_alter('millennium_biblio_data', &$biblio, $marc);
 
   // Store custom data in node
   $node["millennium_biblio_data"] = $biblio;