პორტ-ჰარკორტი (Georgian Wikipedia)

Analysis of information sources in references of the Wikipedia article "პორტ-ჰარკორტი" in Georgian language version.

refsWebsite

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1books.google.com

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archive.org

Udo, Reuben K. (1970). Geographical Regions of Nigeria. University of California Press, გვ. 85.

books.google.com

Williams, Lizzie (2008). Nigeria: The Bradt Travel Guide, გვ. 200.