von Erich Koch Koch-Weser, Erich Friedrich Ludwig 1875-1944 creator text gw Breslau W.G. Korn [1934] 1934 monographic ger

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217 p. 22 cm. Agricultural colonies Prussia, East (Poland and Russia) Prussia, East (Poland and Russia) Economic conditions HD1516.G3 K58 agr35000279 U.S. Dept. of Agr. Library 820625 20260227110954.0 agr35000279