TY  - BOOK
AU  - Nicholson,Michael, x
AU  - x
TI  - Formal theories in international relations: x
SN  - 052139967x
U1  - 327.101/N627f 
PY  - 1990///
CY  - Cambridge
PB  - Cambridge Univ. Press.
KW  - International relations
N1  - Includes
ER  -