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<rdf:Description rdf:about="https://catalogues.royalsociety.org:443/CalmView/record/catalog/HS/11/252" 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 Joseph Johann Littrow to Sir John Herschel, dated at Vienna</dc:title>
  <dc:description>Autograph letter signed by sender. About observing comets, problems with book sellers and shipping books. Joseph Johann Littrow has written a popular astronomy in which he deals with perturbations, precession, and other difficult topics. Would John Frederick William Herschel like a copy?</dc:description>
  <dc:date>25 July 1827</dc:date>
</rdf:Description>