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Books about Widengren:
WIDENGREN, GEO: An entry from Macmillan Reference USA's Encyclopedia of Religion by Eugen Ciurtin (2005)
Religious syncretism in antiquity: Essays in conversation with Geo Widengren (Series on formative contemporary... by Birger A. Pearson (1975)
Ex Orbe Religionum: Studia Geo Widengren by C. J. Bleeker (1972)
The Gnostic Attitude by Geo Widengren: Edited and Translated from the Swedish by Birger Pearson by Birger A. Pearson (Mar 1, 2014)
Orientalische Geschichte von Kyros bis Mohammed. Lieferung 2. Mit Beiträgen von A. Dietrich, G. Widengren, F.M... (1966)
Ex Orbe Religionum. Studia Geo Widengren Oblata. II. Pars Altera. by C. J. Bleeker (1972)
Evil: Essays by Carl Kerényi, Geo Widengren, Victor Maag, Marie-Louise von Franz, Martin Schlappner, Liliane Frey-Rohn... by The Curatorium of the C G Jung Institute, Ralph Manheim and Hildegard Nagel (1967)
Wiki information Widengren:
The 1936 Långforssjöloppet was a Grand Prix motor race held on 9 February 1936. This race was part of the 1936 Grand Prix season as a non-championship race. The race was won by Swedish driver Per-Viktor Widengren in his Alfa Romeo 8C 2300.