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_:vb50897964	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/2002/07/owl#Restriction> .
<http://purl.org/ontology/bibo/issn>	<http://xmlns.com/foaf/0.1/topic>	_:vb50897964 .
_:vb50897964	<http://www.w3.org/2002/07/owl#onProperty>	<http://purl.org/dc/terms/isPartOf> .
_:vb50897964	<http://www.w3.org/2002/07/owl#maxCardinality>	"1"^^<http://www.w3.org/2001/XMLSchema#nonNegativeInteger> .