<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/JHG/9/17/59" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Letter from Pletscher</dc:title>
  <dc:description>Apologises that there is not a more purified sample of substance P and that their stock is too small even for their own research.</dc:description>
  <dc:date>8 September 1961</dc:date>
</rdf:Description>