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Books about Gessmann:
Die Pflanze im Zauberglauben: Die Bibel der Zauberbotanik von Gessmann. G. W. (2003) Taschenbuch by Gessmann. G. W. (1000)
Wiki information Gessmann:
Hans-Werner Gessmann is a German psychologist, psychodramatherapist and university teacher in Russia.
Angela Gessmann is the spouse of Markus Lanz.