TY  - BOOK
AU  - Nicholson Michael
TI  - Formal theories in international relations
T2  - Cambrige studies in international relations; 3
U1  - V1:19.N9, N0 
PY  - 1990///
CY  - Cambridge
PB  - Cambridge University Press     
KW  - HISTORY
N1  - Bibliography p234-242; Includes Index; Appendix p234-233
ER  -