Period defaults to W3C format. Otherwise, since the scheme attribute is not enumerated, the encoding is essentially uncontrolled. Specifying encoding="http://purl.org/dc/terms/Period" on a MODS date element would then be equivalent to encoding="w3cdtf" or no encoding attribute at all. -----Original Message----- From: [log in to unmask] Sent: Friday, December 05, 2003 16:19 To: <[log in to unmask]> Subject: Re: [MODS] genres and governments records Oops, I really meant to say: How about dcterms:Period known by the URI http://purl.org/dc/terms/Period, but I think it still makes the "point". Andy.