Thư mục John Montagu, Bá tước thứ 4 xứ Sandwich

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WikiPedia: John Montagu, Bá tước thứ 4 xứ Sandwich http://nla.gov.au/nla.ms-ms7218 http://www.montaguemillennium.com/research/h_1792_... http://www.oup.com/oxforddnb/info/freeodnb/librari... http://www.smithsonianmag.com/history-archaeology/... //doi.org/10.1093%2Fref:odnb%2F19026 https://www.flickr.com/photos/jeremyglover/sets/72... https://archive.org/details/islandfortressde0000lo... https://archive.org/details/royaldiscordfami0000ba... https://archive.org/details/royaldiscordfami0000ba... https://archive.org/details/royalnavyineurop00syre