Scientific Publications Per Thousand Inhabitants, Planet Earth Żródło: World Bank za rok 2013 http://databank.worldbank.org/data/reports.aspx?source=2&type=metadata&series=IP.JRN.ARTC.SC
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Scientific Publications Per Thousand Inhabitants, Planet Earth Żródło: World Bank za rok 2013 http://databank.worldbank.org/data/reports.aspx?source=2&type=metadata&series=IP.JRN.ARTC.SC