北緯51度線 (Japanese Wikipedia)

Analysis of information sources in references of the Wikipedia article "北緯51度線" in Japanese language version.

refsWebsite

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19^th place

google.co.jp

books.google.co.jp

United States, Bering Sea Tribunal of Arbitration (1892). Fur-seal Arbitration: The Case of the United States before the Tribunal of Arbitration to convene at Paris under the provisions of the treaty between the United States of America and Great Britain, concluded February 29, 1892. United States Government Printing Office. p. 14. OCLC 68198841
Haycox, Stephen W. (2002). Alaska: An American Colony. University of Washington Press. pp. 1118–1122. ISBN 978-0-295-98249-6

navy.mil

aa.usno.navy.mil

http://aa.usno.navy.mil/data/docs/Dur_OneYear.php

worldcat.org

United States, Bering Sea Tribunal of Arbitration (1892). Fur-seal Arbitration: The Case of the United States before the Tribunal of Arbitration to convene at Paris under the provisions of the treaty between the United States of America and Great Britain, concluded February 29, 1892. United States Government Printing Office. p. 14. OCLC 68198841