00462nam a2200157   4500001000500000005001700005008004100022020001500063035000300078041000700081050002300088100001700111245010700128260005200235300001700287877020230410121153.0060907n2000    dr                  spa    a0198780656    aEN14aJZ 1249 B992i 2000  aBuzan, Barry1 aInternational systems in world history :bremaking the study of international relations /cBarry Buzan  aOxford  :bOxford university press,c2000        aviii, 452 p.