Bonjour, I try to clean our Koha mysql database after that a librarian 'played' with the acquisitions module. I deleted the bilblionumber in biblio, biblioitems, items and marc_biblio . I can see my biblionumber still in the database after searching with catalogue/marc search tool. Do you know where can i find the biblionumber that i have to delete / Regards Serge -- Serge Renaux Groupe ESIEE / CCI Paris EMail:s.renaux@esiee.fr Tel:(33)1.45.92.67.46