Adolph Theodor Kupffer (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Adolph Theodor Kupffer" in English language version.

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1web.archive.org

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1learnedrussian.com

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1ann-geophys.net

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ann-geophys.net

Nevanlinna, H.; Hakkinen, L. (2010). "Results of Russian geomagnetic observatories in the 19th century: magnetic activity, 1841–1862" (PDF). Ann. Geophys. 28 (4): 917–926. Bibcode:2010AnGeo..28..917N. doi:10.5194/angeo-28-917-2010.

doi.org

Nevanlinna, H.; Hakkinen, L. (2010). "Results of Russian geomagnetic observatories in the 19th century: magnetic activity, 1841–1862" (PDF). Ann. Geophys. 28 (4): 917–926. Bibcode:2010AnGeo..28..917N. doi:10.5194/angeo-28-917-2010.

harvard.edu

ui.adsabs.harvard.edu

Nevanlinna, H.; Hakkinen, L. (2010). "Results of Russian geomagnetic observatories in the 19th century: magnetic activity, 1841–1862" (PDF). Ann. Geophys. 28 (4): 917–926. Bibcode:2010AnGeo..28..917N. doi:10.5194/angeo-28-917-2010.

learnedrussian.com

"Biography of Adolf Kupffer Efron | Learned Russian". Archived from the original on 2012-04-25. Retrieved 2011-10-16.

web.archive.org

"Biography of Adolf Kupffer Efron | Learned Russian". Archived from the original on 2012-04-25. Retrieved 2011-10-16.