Поршнев, Б. Ф. <br/><br/>
Feodalizm i narodnyye massy / 
B. F. Porshnev. 
 - Moskva :  Nauka,  1964. 
 - 519 p. ; 
<br/><br/><label>ISBN: </label>RUSSIAN5983 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Economic history
<br/><br/><label>Dewey Class. No.: </label>321.30947  / Fe