... gases.7 099 _book.fm Page 41 Friday, July 14, 2006 3:13 PM© 2007 by Taylor & Francis Group, LLC 32 Principles of Air Quality Management, Second Edition The filtering construction of the ... John Wiley and Sons, Inc., 198 6). 7 099 _book.fm Page 31 Friday, July 14, 2006 3:13 PM© 2007 by Taylor & Francis Group, LLC 22 Principles of Air Quality Management, Second Edition ... decline of Norwayspruce and other conifers in the Black Forest of Germany. The implication of acidicdeposition of some type is, in part, a result of the fact that decline of conifers is7 099 _book.fm...