According to Heather, a member of the Koha Cataloging Interest Group: "Koha doesn't have holdings records with the bibliographic & item records the same way some other systems do--some of the fields that some ILS's display in a holdings record are in, for example, the bib record in Koha (e.g., 506, 538, etc.) and item information in Koha goes into subfields in a 952 field (one 952 field = one item)."