The first and second world wars. War backgrounds edition of Western civilization.

By Tschan, Francis Joseph.
Chicago, Philadelphia [etc.] J. B. Lippincott company 1945 .
4 p. l., 1269-1511, xxxvi p. , Chapters 41-46 of the authors' Western civilization, with a new chapter added. 24 cm..

The chronicle of the Slavs.

By Helmold.
New York Columbia University Press 1935 .
xii, 321 p.

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The first and second world wars. War backgrounds edition of Western civilization.

The chronicle of the Slavs.