<?xml version="1.0" encoding="utf-8"?>
<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HF/1/3/5/9/11" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>C E Coulthard, Boots Pure Drug Company Limited to H W Florey, Oxford</dc:title>
  <dc:description>Discusses inhibition figures obtained from Florey's sample of the barium penicillin standard - seems to have been a rapid decline in potency.</dc:description>
  <dc:date>29 March 1943</dc:date>
</rdf:Description>