CONCEPTShttp://cat.aii.caas.cn/concept/32607cat.aii.caas.cnhttp://d-nb.info/gnd/4014733-2d-nb.infohttp://eurovoc.europa.eu/142eurovoc.europa.euhttp://id.loc.gov/authorities/subjects/sh85043129id.loc.govhttp://linkeddata.ge.imati.cnr.it:2020/resource/EARTh/42310linkeddata.ge.imati.cnr.ithttp://lod.gesis.org/thesoz/concept/10041843lod.gesis.orghttp://www.eionet.europa.eu/gemet/concept/2715www.eionet.europa.euhttp://zbw.eu/stw/descriptor/18989-2zbw.eu。