Baltic Countries :  a survey of the peoples and states on the Baltic with special regard to their history, geography and economics / 
ed. Józef Borowik. 
 - Toruń ;  Gdynia :  Baltic Institute,  1935-1936. 
 -  33 cm. 
 - Niereg. 
 - Vol. 1, nr 1 (August 1935)-vol. 2, nr 2 (September 1936) = nr 4.