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<section begin=Engelhardt 1866 />{{Book| Book = Engelhardt 1866| Title = Engelhardt, Conrad. (1866) ''Denmark in the early iron age''. | Link = }}<section end=Engelhardt 1866. [http://archive.org/details/denmarkinearlyir00engeuoft (Available Online)]<br><includeonly>[[Category:Engelhardt 1866References]] [[Category:Books]]</includeonly><noinclude>[[Category:Public Domain Books and Art]]</noinclude>