Charles Butler (Imker) (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "Charles Butler (Imker)" in German language version.

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doi.org

Johannes Pernaa, Maija Aksela: Learning Organic Chemistry through a Study of Semiochemicals. In: Journal of Chemical Education. 88, 2011, S. 1644–1647, doi:10.1021/ed900050g.