Eastern Germany colonial reservation :  results of reserches conducted by dr Wilhelm Volz, professor at Leipzig University, published in his book Die Ostdeutsche Wirtschaft. 

 - 2 ed. 
 - Poznań :  Western Press Agency,  1957. 
 - 38, 16 s. :  il. ;  10 cm. 
 - German Testimonies ;  pamphlet 2. .
 - Świadectwa Niemieckie ;  z. 2. .
<br/><br/><br/>Tł. z pol. Tekst częśc. niem. 
<br/><br/><label>Nat. Bib. No.: </label>PB 157/60