TY  - BOOK
AU  - Riker William H
AU  -  Ordeshook Peter C
TI  - Introduction to positive political theory
T2  - Prentice Hall contemporary political theory series, ed by David Easton
U1  - W:(R), L31 
PY  - 1973///
CY  - New Jersey 
PB  - Prentice Hall     
KW  - POLITICAL SCIENCE
ER  -