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Graph of npg:Subject triples.
The npg:Subject objects model subjects from the NPG subjects ontology.
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Graph of npg:Catalog triples. The npg:Catalog objects model descriptor lists.
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Graph of npg:Publication triples.
The npg:Publication objects model journal title publications from the NPG products ontology.
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Graph of npg:Technique triples.
The npg:Technique objects model techniques from the NPG techniques ontology.
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Graph of npg:Citation triples. The npg:Citation objects model journal article references.