rdfs:comment A single exemplar of a musical expression,.
For example, it could be a single exemplar of a CD, copy of a one-volume monograph, a single audio
rdfs:comment of barcodes on them. The numbers represented by, a superset of the North American Universal Product, Council of Canada (ECCC) to become GS1.
rdfs:comment IFPI (International Federation of Phonogram and, Code consists historically of 4 figures, presently, Master's Voice). Note that the number of countries