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Lieven Ferdinand de Beaufort Liezen (huyện) Liebenburg Liebenfels Liezen Liebenthal, Kansas Liebenswiller Liesenich Liepen LienenTài liệu tham khảo
WikiPedia: Lieven Ferdinand de Beaufort http://data.bibliotheken.nl/id/thes/p070380546 http://www.biografischportaal.nl/en/persoon/346220... //www.worldcat.org/issn/0067-4745 //www.worldcat.org/issn/0067-8546 https://trove.nla.gov.au/people/1064735 https://www.idref.fr/083822216 https://id.loc.gov/authorities/names/no2008115341 https://d-nb.info/gnd/128274549 https://repository.naturalis.nl/pub/504078/BD19490... https://repository.naturalis.nl/pub/505174/BEAU196...