_:ned1b7f8cebb54d21ae6524e89b4f739cxb4
<http://schema.org/valueRequired>
"true"^^<http://www.w3.org/2001/XMLSchema#boolean>
<https://www.eurochlor.org/document/tsem-11-394-nitrogen-trichloride-monitoring-in-chlorine-gas-by-uv-spectroscopy-r-bloemenkamp/>