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Encyclopedia of environment and pollution control Author not listed 2003 Environmental Geography Science, Land Use, And earth systems Marsh, William M. 2005 Handbook of Hazardous Air Pollutants Assessment, Liabilities, and regulatory compliance Bradstreet, Jeffrey W. 2004 Higher education in Pakistan a historical and futuristic perspective Isani, U.A.G. 2005 Industrial pollution problems and solutions Kumar, Arvind 2006 Library in a book Long, Douglas 2005