Violetto di genziana (Italian Wikipedia)

Analysis of information sources in references of the Wikipedia article "Violetto di genziana" in Italian language version.

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1books.google.com

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books.google.com

(EN) R. W. Sabnis, Handbook of Biological Dyes and Stains: Synthesis and Industrial Applications, John Wiley and Sons, 29 marzo 2010, pp. 309–, ISBN 978-0-470-40753-0. URL consultato il 27 giugno 2011.