| documents of the baronial movement of reform and rebellion.
1258-1267, selected by r.e. treharne, edited by i.j. sanders, oxford,
at the clarendon press, 1973, pp. x+354 (oxford medieval texts,
general editors: v.h. galbraith, r.a.b. mynors, c.n.l. brook)
(documenti sul movimento riformatore e rivoluzionario dei baroni.
1258-1267.)
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