Saatkrähe (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Saatkrähe" in German language version.

refsWebsite
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brodowski-fotografie.de

doi.org

  • Christopher D. Bird, Nathan J. Emery: Insightful problem solving and creative tool modification by captive nontool-using rooks. In: Proceedings of the National Academy of Sciences. 106, 2009, S. 10370, doi:10.1073/pnas.0901008106.

euring.org