<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/FS/7/2/592/1" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter to Sir Edward Appleton, Secretary, Department of Scientific and Industrial Research (DSIR), on involving Ruhemann with work on the possibility of making heavy hydrogen on a large scale</dc:title>
  <dc:description>Letter headed 'Directorate of Tube Alloys', signature possibly 'NW Perrin'</dc:description>
  <dc:date>14 January 1943</dc:date>
</rdf:Description>