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Vandledningen ved Fossum Jernvrk. da Vandledningen ved Fossum Jernvrk ved Porsgrund Udgivelsesr Omfang mm sort tuschlavering Forfatter Rawert Ole Jrgen Porsgrunn Norge Billedsamlingen Rawerts maleriske Reise VI Det Kongelige Bibliotek Ole Jrgen Rawert PDold Collections of The Royal Library Denmark Ole Jrgen Rawert Fossum