Frederuna (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Frederuna" in Spanish language version.

refsWebsite

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1books.google.com

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archive.org

Palgrave, Sir Francis; Palgrave, Sir Robert Harry Inglis; Barker, Geoffrey Palgrave (1921). The collected historical works of Sir Francis Palgrave, K.H.. University press.

books.google.com

Bradbury, J. (2007). The Capetians: Kings of France 987-1328. Bloomsbury Publishing. p. 34. ISBN 978-0-8264-2491-4.