Metoda Bergiusa (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Metoda Bergiusa" in Polish language version.

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341^st place

google.com

Bergius Friedrich: Process for treating carbon and carbon compounds under heat and pressure. [w:] Patent US 1592772 [on-line]. 30 Sie 1921. [dostęp 2014-05-23]. (ang.).

h-group.de

Bergius-Pier Process. [w:] Fact Sheet Technology Energy [on-line]. h-tec. [dostęp 2014-05-23]. (ang.).