Georg Lunge (Esperanto Wikipedia)

Analysis of information sources in references of the Wikipedia article "Georg Lunge" in Esperanto language version.

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1chemspider.com

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chemspider.com

ChemSpider

google.com.br

books.google.com.br

The Manufacture of Sulphuric Acid and Alkali: Sulphuric acid
The Manufacture of Nitric Acid and Nitrates, Allin Cottrell, Georg Lunge, 1923
Organic Chemistry, R L Madan