Sarah I have more experience in using LOM than DC but I got the impression from somewhere that IsBasedOn was dropped from DC at some point because it more or less replicated the DC.Source element (except it doesn't allow reciprocity of reference) -- but, as you say, it stayed on in LOM. IsBasedOn according to the CanCore guidelines http://www.cancore.ca/en/help/59.html means: The described resource is derived, in whole or in part, from the referenced resource. (Use this term for any types of revisions, corrections, changes, etc., that are not adequately covered by isversionof or isformatof.) While Source according to http://dublincore.org/documents/dcmi-terms/#H2 means: Definition: The resource from which the described resource is derived. Comment: The described resource may be derived from the related resource in whole or in part. Recommended best practice is to identify the related resource by means of a string conforming to a formal identification system. So perhaps using Source in the record for the translation is another possibility? Regards Irvin Irvin Flack Metadata Librarian Centre for Learning Innovation NSW Dept of Education and Training [log in to unmask] ********************************************************************** This message is intended for the addressee named and may contain privileged information or confidential information or both. If you are not the intended recipient please delete it and notify the sender. **********************************************************************