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Mental arithmetic, Aritmética, Aufgabensammlung, Evolution, Human evolution, Human reproduction, Kopfrechnen, Life, Matemáticas, Mathematics, Mathematikunterricht, Origin, SekundarstufeID Numbers
- OLID: OL777839A
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August 25, 2008 | Edited by RenameBot | fix author name |
April 1, 2008 | Created by an anonymous user | initial import |