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