Titles by Porter, Robert Ker in BIBTEX format

There are 2 titles associated with this person.

@book{ wphp_3424
  author={Helme,Elizabeth},
  year={1798},
  title={Instructive rambles in London, and the adjacent villages. Designed to amuse the mind, and improve the understanding of youth. By Elizabeth Helme. In two volumes.},
  publisher={Thomas Norton Longman III \& Elizabeth Newbery},
  address={London},    }

@book{ wphp_3410
  author={Helme,Elizabeth},
  year={1800},
  title={Instructive rambles extended in London, and the adjacent villages. Designed to amuse the mind and improve the understanding of youth. By Elizabeth Helme. In two volumes.},
  publisher={Sampson Low [Berwick Street] \& },
  address={London},    }