Wymieranie ordowickie (Polish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Wymieranie ordowickie" in Polish language version.

refsWebsite

Global rank Polish rank

75^th place

83^rd place

756^th place

32^nd place

archive.ph

Sr, C and O isotope geochemistry of Ordovician brachiopods: a major event around the Middle-Late Ordovician transition. | Mendeley

nasa.gov

Explosions in Space May Have Initiated Ancient Extinction on Earth. NASA. [dostęp 2017-10-17].