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09 (µg/m 3) 2.11 Suspected Blood Lead Levels (BLL) in Children under Five Years in Sindh 2.12 Loss of IQ Points in Early Childhood in Relation to Lower Threshold Levels (X 0) of Blood Lead Levels (BLL) 4.1 PM Ambient Concentrations in Karachi, SUPARCO, 2007-08 4.2 PM 2.5 Ambient Air Concentrations in Karachi, Sindh-EPA, 2008-09 4.3 Monthly Average Wind Speed and Rainfall in Karachi 4.4 Estimated Blood Lead Level (BLL) in Children 2-5 Years Old, in Relation to Pb in Drinking Water 4.5 Loss of IQ Points in Early Childhood in Relation to Lower Threshold Levels (X 0) of Blood Lead Levels (BLL) 4.6 Benefit-Cost Ratios of 500-ppm Sulfur Diesel (Left) and 50-ppm Sulfur Diesel (Right) in Karachi 4.7 European Union Diesel Vehicle Emission Standards for PM 4.8 European Union Heavy-Duty Diesel Engines Emission Standards for PM 4.9 Benefit-Cost Ratios of Retrofitting In-Use Diesel Vehicles with DOC 4.10 Benefit-Cost Ratios of Converting In-Use Diesel-Fueled Minibuses and Vans to CNG 4.11 Benefit-Cost Ratios of Low-Sulfur Fuels in Karachi 4.12 Benefit-Cost Ratios of Retrofitting In-Use Diesel Vehicles with DOC in Karachi 4.13 Benefit-Cost Ratios of Conversion of Diesel Vehicles, Rickshaws, and Motorcycles in Karachi 5.1 Economic Structure of Pakistan and other Developing Countries 5.

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