Barla P and S Perelman (2005). “Sulphur Emissions and Productivity Growth in Industrialised Countries.” Annals of Public and Cooperative Economics 76(2): 275-300.

Barla P and S Perelman (2005). “Sulphur Emissions and Productivity Growth in Industrialised Countries.” Annals of Public and Cooperative Economics 76(2): 275-300.

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