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<rdf:Description rdf:about="https://archives.ucl.ac.uk:443/CalmView/record/catalog/HALDANE/5/1/2/3/29" 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 William C Liddle to regarding &lt;i&gt;Science and Everyday Life&lt;/i&gt;</dc:title>
  <dc:description>Letter from William C Liddle regarding a challenge posed by Haldane in his book &lt;i&gt;Science and Everyday Life&lt;/i&gt; in which the reader is asked to colour areas of a map using in only four colours in such a way that no areas of the same colour touch. A copy of Haldane's response is typed on the reverse of the first page of Liddle's letter.</dc:description>
  <dc:date>15 Nov 1941</dc:date>
</rdf:Description>