Acuerdo de Ostrów (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "Acuerdo de Ostrów" in Spanish language version.

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166^th place

archive.org

Jakštas, Juozas (1984). «Lithuania to World War I». En Gerutis, Albertas, ed. Lithuania: 700 Years. translated by Algirdas Budreckis (6th edición). New York: Manyland Books. p. 60. ISBN 0-87141-028-1. LCC 75-80057.
Turnbull, Stephen (2004). Crusader Castles of the Teutonic Knights, Vol. 2: The Stone Castles of Latvia and Estonia, 1185-1560. Osprey Publishing. pp. 53–54. ISBN 1-84176-712-3.

loc.gov

catalog.loc.gov

Jakštas, Juozas (1984). «Lithuania to World War I». En Gerutis, Albertas, ed. Lithuania: 700 Years. translated by Algirdas Budreckis (6th edición). New York: Manyland Books. p. 60. ISBN 0-87141-028-1. LCC 75-80057.