@article{632401,
      note = {Reproduction of original from British Library.},
      author = {Roberts, John,},
      url = {http://library.usi.edu/record/632401},
      title = {Arithmetic, neu rifyddeg. ... Yr ail argraphiad gan John  Roberts. ... [electronic resource].},
      publisher = {Argraphwyd tros y cyhoeddwr,},
      recid = {632401},
      pages = {vi,168p. ;},
      address = {[Dublin] :},
      year = {1796},
}