TY  - BOOK
AU  - Riker William H
AU  -  Crdeshook Peter C
TI  - Introduction to positive political theory
T2  - Prentice-Hall Contemporary Political Theory Series. Ed by David Easton
U1  - W, L3 
PY  - 1973///
CY  - Englewood
PB  - Clifs New Jersey Prentice-Hall       
KW  - Political Science
N1  - Bibliography at the end of each chapter
ER  -