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              Castles S., Environmental Change and Forced Migration. Making Sense of the Debate, Working Paper, no. 70, UNHCR, Geneva, 2002.
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              Castles, S. (2002). 'Environmental Change and Forced Migration: Making Sense of the De- bate', UNHCR Working Paper No. 70 (UNHCR: Geneva).
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              Castles, S. (2002). Environmental Change and Forced Migration: Making Sense of the Debate. New Issues in Refugee Research. Working Paper 70. Geneva: UNHCR.
                 (xsd:string)
              
            
              Castles, S. (2002). Environmental change and forced migration: Making sense of the debate (Working Paper No. 70). UNHCR.
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              Castles, Stephen (2002): Environmental Change and Forced Migration: Making Sense of the Debate, New Issues in Refugee Research Working Paper 70, Genf: UNHCR.
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