_:nb3cb0d0075664072835da5724a01f1e4xb4
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://die-planer.ch/downloads/die-neue-vdi-6022-blatt-3-raumlufttechnik-raumluftqualitaet-dr-achim-keune-tbb-dr-keune-bargtheide/>