A sample table from the World Development Indicators (WDI) publication The WDI tables are published in the latest World Development Indicators (WDI print edition). They contain the most recently published data series. Please review the notes about the data, definitions and sources on the last page of each PDF file. WDI 2007 table 3.13 Air pollution. WDI tables are updated in late April of each year. Related links | 
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