There are 4 titles associated with this person.

@book{ wphp_14799
  author={Hartley,David},
  year={1794},
  title={Argument on the French Revolution, and the means of peace. By David Hartley, Esq.},
  publisher={Richard Cruttwell \& },
  address={Bath},    }
@book{ wphp_15049
  author={Hartley,David},
  year={1794},
  title={Argument on the French revolution, and the means of peace. By David Hartley, Esq.},
  publisher={Richard Cruttwell \& },
  address={Bath},    }
@book{ wphp_14903
  author={Hartley,David},
  year={1794},
  title={Argument on the French Revolution. By David Hartley, Esq.},
  publisher={Richard Cruttwell \& },
  address={Bath},    }
@book{ wphp_14933
  author={Hartley,David},
  year={1794},
  title={Argument on the French Revolution. The second edition. By David Hartley, Esq.},
  publisher={Richard Cruttwell \& },
  address={Bath},    }