O.21 http://lod.ehri-project-test.eu/units/il-002798-4019576/alternateIDs/1 an entity of type: Identifier rico:textualValue O.21 rdf:type rico:Identifier rico:isOrWasIdentifierOf <http://lod.ehri-project-test.eu/units/il-002798-4019576> data from the linked data cloud