There are 2 titles associated with this person.

@book{ wphp_14793
  author={Norris,Robert},
  year={1788},
  title={A Short Account of the African Slave Trade, collected from local knowledge, from the evidence given at the bar of Both Houses of Parliament, and, from tracts written upon that subject},
  publisher={},
  address={Liverpool},    }
@book{ wphp_14791
  author={Norris,Robert},
  year={1788},
  title={A Short Account of the African Slave Trade, collected from local knowledge, from the evidence given at the bar of Both Houses of Parliament, and, from tracts written upon that subject, By Robert Norris.},
  publisher={},
  address={Liverpool},    }