Inge Heiberg (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Inge Heiberg" in English language version.

refsWebsite

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books.google.com

Espeland, Velle. "Inge Heiberg". In Helle, Knut (ed.). Norsk biografisk leksikon (in Norwegian). Oslo: Kunnskapsforlaget. Retrieved 21 January 2012.
Bratberg, Terje. "Heiberg". Store norske leksikon (in Norwegian). Oslo: Kunnskapsforlaget. Retrieved 20 April 2009.
"Inge Valdemar Heiberg". Store norske leksikon (in Norwegian). Oslo: Kunnskapsforlaget. Retrieved 21 January 2012.