User talk:Minorities observer
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-- 02:42, 24 August 2011 (UTC) Linguistic map of Czechoslovakia in 1930>
The map is based on: -Czechoslovak geographical atlas (1936) map called: Republika Ceskoslovenska. Pomery narodnostni. -Polish Geographical Atlas (Powszechny atlas geograficzny), Lwów 1928, map 48 -Polish historical atlas (Atlas historyczny świata), Warsaw 1974, p. 120 -German historical atlas Westermann Grosser Atlas zur Weltgeschichte, Brunswick 1956, p. 151 -German Historisches Atlas, Berlin 1997, p. 99.
No German interwar sources used!
Best regards, ˜˜˜˜