Johan Jakob Nervander (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Johan Jakob Nervander" in English language version.

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ilmatieteenlaitos.fi

en.ilmatieteenlaitos.fi

unipv.it

ppp.unipv.it

  • Holmberg, Peter. "Northern Light Studies and Geomagnetic Observations in Finland in the 19th Century" (PDF).