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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/TG/1/12/90" xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" xmlns:dc="http://purl.org/dc/elements/1.1/">
  <dc:title>Memorandum from Thomas Gold to Carl Sagan</dc:title>
  <dc:description>Concerning the degree of  'erosion' of channels at different latitudes, and the effect of large 'volcanoes'.</dc:description>
  <dc:date>7 April 1975</dc:date>
</rdf:Description>