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Collier, Paul 1949-, V. L. Elliott, Håvard Hegre, Anke Hoeffler, Marta Reynal-Querol, and Nicholas 1967- Sambanis. Breaking the Conflict Trap: Civil War and Development Policy. Washington, D.C.: World Bank, 2003.

Collier, Paul 1949-, et al. Breaking the Conflict Trap: Civil War and Development Policy. Washington, D.C.: World Bank, 2003.