[Koha] Reporting biblios with no items

Hello The following report: SELECT biblio.biblionumber, biblio.title FROM biblio LEFT JOIN items ON biblio.biblionumber = items.biblionumber WHERE items.itemnumber IS NULL shows all the biblios with no item. Is there a possibility to expand it so it doesn't show all the _analytic_ records (Sadly those show up too and I want to have a list with all the records witch have no holding information at all). Beda