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<rdfs:label xml:lang='en'>Natural sciences ▶ Astronomy and astrophysics</rdfs:label>
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<skos:closeMatch><rdf:Description rdf:about='http://semantics.gr/authorities/ekt-unesco/1383279212'><rdfs:label xml:lang='el'>Επιστήμη ▶ Επιστήμες του Διαστήματος ▶ Αστρονομία και αστροφυσική</rdfs:label>
<rdfs:label xml:lang='en'>Science ▶ Space sciences ▶ Astronomy and astrophysics</rdfs:label>
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<skos:closeMatch><rdf:Description rdf:about='http://id.loc.gov/authorities/subjects/sh85009032'><rdfs:label>Astrophysics</rdfs:label>
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<rdfs:label xml:lang='en'>Science ▶ Space sciences ▶ Astronomy ▶ Astrophysics</rdfs:label>
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<rdfs:label xml:lang='en'>Natural Sciences ▶ Physical sciences ▶ Astronomy and Astrophysics</rdfs:label>
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<rdfs:label xml:lang='en'>Scientific disciplines of the National Archive of Ph.D. Theses</rdfs:label>
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