CONCEPTShttp://cat.aii.caas.cn/concept/40558cat.aii.caas.cnhttp://cat.aii.caas.cn/concept/40569cat.aii.caas.cnhttp://dewey.info/class/660.6/dewey.infohttp://d-nb.info/gnd/4069491-4d-nb.infohttp://eurovoc.europa.eu/3797eurovoc.europa.euhttp://linkeddata.ge.imati.cnr.it:2020/resource/EARTh/96390linkeddata.ge.imati.cnr.ithttp://lod.gesis.org/thesoz/concept/10039595lod.gesis.orghttp://lod.nal.usda.gov/nalt/4632lod.nal.usda.govhttp://stitch.cs.vu.nl/vocabularies/rameau/ark:/12148/cb119428998stitch.cs.vu.nlhttp://www.eionet.europa.eu/gemet/concept/898www.eionet.europa.euhttp://zbw.eu/stw/descriptor/15635-3zbw.eu。