Dovring, Folke <br/><br/>
Land and Labor in Europe 1900-1950: a Comparative Survey of Recent Agrarian History 

 - 2nd. ed. 
 - The Hague :   Martinus Nijhoff,   1960. 
 - viii, 480 p. :   mapas ;   21 cm. 
 - Studies in Social Life ;   4 .