TY  - BOOK
AU  - Service, Elman
TI  - Origins of the state and civilization : the process of cultural evolution
U1  - BIB/04.04.01/01940 
PY  - 1975///
CY  - New York
PB  -  W.W. Norton & Company, 
KW  - CIENCIA POLITICA
KW  - GOBIERNO
ER  -