TY  - BOOK
AU  - Boucher, David  .
TI  - Political theories of international relations from thucydides to the present / 
SN  - 0-19-878054-0
U1  - W:19 
PY  - 1998///
CY  - New Delhi : 
PB  - Oxford University Press , 
KW  - Political science
ER  -