It isn't duplicated - it's just suggested for re-use.
>> Although these three terms are in the DCMI type vocabulary, the DCMIQuestion to an RDF-expert: Is this a technical limitation? I don't
>> type vocabulary does not provide the controlled values for
>> basisOfRecord, so they need to be in the DwC type vocabulary.
fully grasp why here a vocabulary needs to duplicated (the entire
dcmi-type vocabulary is a potential vocabulary for basis of record,
not just three items).
Gregor