Seiliau hanesyddol cenedlaetholdeb Cymru
Subtitle: cyfres o ddarlithiau
By: edited by D.M.L..
Publisher: Plaid Cymru
Published: 1950
Language: wel
Number of pages: 143
Notes: Contributors: A.W. Wade-Evans, T.J. Pierce, C. Thomas, A.O.H. Jarman, D.G. Jones, G. Evans. Also published in English as 'The historical basis of Welsh Nationalism'.