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KITLV Kurkdjian Ohannes The crater lake Kawah Ijen in the Ijen Mountains circa . accession number credit line nl Het kratermeer Kawah Idjen in het Idjengebergte en The crater lake Kawah Ijen in the Ijen Mountains cm exhibition history Universiteitsbibliotheek Leiden Koninklijk Instituut voor Taal Land en Volkenkunde nl Prentbriefkaart