TY  - BOOK
AU  - Riker, William H.
ED  - Ordeshook, Peter C.
TI  - Introduction to positive political theory
T2  - Prentice-Hall contemporary political theory series
U1  - 320.018 
PY  - 1973///
CY  - Englewood Cliffs
PB  - Prentice-Hall
ER  -