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On 6/4/14, 8:01 PM, Dave Caroline wrote: > > You seem to have multiple so none are unique :) Just in case this was the confusion, the "U" in URI stands for Uniform. As Jodi says, there is no requirement for uniqueness of identifiers on the web. In fact, non-uniqueness is a feature, not a bug. It mirrors reality, where you have an SSN, a library card number, a driver's license number, etc., and each identifies you in some context. kc > > >> couple of instances where these sort of identifiers are being put into MARC > and what happens when one of the servers falls off the net or some > boss decides to modify a service, lots of data to fixup, yet again > > Dave Caroline, not convinced of the linked world prophesies yet -- Karen Coyle [log in to unmask] http://kcoyle.net m: 1-510-435-8234 skype: kcoylenet