Boswell, P. G. H. (1929). The geology of the country around Sudbury (Suffolk). H.M.S.O..
Chicago Style (17th ed.) CitationBoswell, Percy George Hamnall. The Geology of the Country Around Sudbury (Suffolk). London: H.M.S.O., 1929.
ציטוט MLABoswell, Percy George Hamnall. The Geology of the Country Around Sudbury (Suffolk). H.M.S.O., 1929.
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