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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HF/1/3/2/30/19" 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 Howard Walter Florey to A N Richards, National Research Council, Washington</dc:title>
  <dc:description>Is sending sample of standard penicillin powder against which assays done - Burroughs Wellcome agree with value - from literature from Merck and Squibb, seems unlikely that the 'Florey' unit is the same - says chemical work is progressing - Merck and Squibb getting material of same composition as they are - talk of different penicillins should be discouraged.</dc:description>
  <dc:date>14 April 1943</dc:date>
</rdf:Description>