Oxford, Clarendon Press, (1962).
XII,548 p. Cloth 19 cm (On Medieval art, literature in latin and vernacular, handwriting, philosophy, education, law, position of woman, economy, administration, political thought)
Oxford, Clarendon Press, (1969).
XII,548 p. Cloth 19 cm (On Medieval art, literature in latin and vernacular, handwriting, philosophy, education, law, position of woman, economy, administration, political thought)