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This image of a simple structural formula is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.
{{Information |Description={{it|possibile struttura di molecola asfaltenica}} |Source=Transferred from [http://it.wikipedia.org it.wikipedia]; transfer was stated to be made by User:Jacopo Werther.<br/> (Original text : ''"Bitumi e derivati" - cors...