<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/JHG/9/17/43" 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 Pletscher</dc:title>
  <dc:description>Restates his views about the purity of latest substance P samples -- promises his assistant will carry out further assays as he will be in the US.</dc:description>
  <dc:date>31 March 1959</dc:date>
</rdf:Description>