Tlenki żelaza (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Tlenki żelaza" in Polish language version.

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Hans G.H.G. Völz Hans G.H.G. i inni, Pigments, Inorganic, [w:] Ullmann’s Encyclopedia of Industrial Chemistry, Weinheim: Wiley‐VCH, 2005, s. 68, DOI: 10.1002/14356007.a20_243.pub2 (ang.).