CD-ROM http://www.snik.eu/ontology/bb/Cdrom meta:chapter bb:chapter5-3↪ A Metamodel for Modeling Health Information Systems on Three Layers: 3LGM² rdf:type meta:EntityType↪ entity type rdfs:label CD-ROM @en CD-ROM @fa rdfs:subClassOf bb:NonSignalBasedTransmittingMedium↪ Non-Signal-Based Transmitting Medium skos:closeMatch dbr:CD-ROM inverse relations is ov:defines of sniko:bb↪ Health Information Systems Ontology