TY  - DATA
T1  - Polity Data:  Persistence and Change in Political Systems, 1800-1971
AU  - Gurr, Ted Robert
AU  - Gurr, Erika
PY  - 1992
DO  - 10.3886/ICPSR05010.v1
PB  - Inter-university Consortium for Political and Social Research [distributor]
ER  -