query-2adb2e9ed1cc20178eee751ae23f2c93

rq turtle/ttl

nioshtic-with-isbn-13data refresh rate: 3600 preferred output format: Table query title: Identifier map: ISBN-13 with or without NIOSHTIC2-ID

Use at

PREFIX wdt: <http://www.wikidata.org/prop/direct/>
SELECT ?item ?ISBN_13 ?NIOSHTIC2_ID WHERE {
  ?item wdt:P212 ?ISBN_13.
  OPTIONAL { ?item wdt:P2880 ?NIOSHTIC2_ID. }
}

Query found at

graph TD classDef projected fill:lightgreen; classDef literal fill:orange; classDef iri fill:yellow; v2("?ISBN_13"):::projected v3("?NIOSHTIC2_ID"):::projected v1("?item"):::projected v1 --"wdt:P212"--> v2 subgraph optional0["(optional)"] style optional0 fill:#bbf,stroke-dasharray: 5 5; v1 -."wdt:P2880".-> v3 end