Edwards, N. John Frost and the Chartist movement in Wales. Western Valleys Labour Classes.
Chicago-referens (17:e uppl.)Edwards, Ness. John Frost and the Chartist Movement in Wales. Abertillery: Western Valleys Labour Classes.
MLA-referens (8:e uppl.)Edwards, Ness. John Frost and the Chartist Movement in Wales. Western Valleys Labour Classes.
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