CRWflags.com. K. Ivanov argues, that Russia has changed her official flag in 1858
ehs.org.uk
Steven Nafziger, "Serfdom, emancipation, and economic development in Tsarist Russia" (Working paper, Williams College, 2012). onlineΑρχειοθετήθηκε 2014-04-29 στο Wayback Machine.
Steven Nafziger, "Serfdom, emancipation, and economic development in Tsarist Russia" (Working paper, Williams College, 2012). onlineΑρχειοθετήθηκε 2014-04-29 στο Wayback Machine.