Sosnowski, Jerzy Jan <br/><br/>
Prawda dziejowa 1914-1917 / 
Jerzy Jan Sosnowski. 
 - Warszawa :  Gebethner i Wolff,  1925. 
 - 736 p. ;  26 cm. 
<br/><br/><label>Subjects--Index Terms: </label>Polish question. World War, 1914-1918 -- Diplomatic history. World War, 1914-1918 -- Territorial questions.