TY  - BOOK
AU  - Kula,Witold, x
AU  - x
TI  - An  economic   theory   of  the  feudal   system: Towards  a  model  of  the  -----
SN  - x  
U1  - 330.1/KUE 
PY  - 1976///
CY  - Lond
PB  - N. L . B.
KW  - Economics
ER  -