2Nd International Symposium on Non-Co2 Greenhouse Gases - Scientific Understanding, Control and Implementation, Date: SEP 08-10, 1999, Location: NOORDWIJKERHOUT, NETHERLANDS, Sponsors: Vereniging van Milieukundigen, Netherlands Assoc Environm Profess, European Federat Clean Air, Environm Protect Assoc, UN Intergovt Panel Climate Change, Minist Housing, Spatial Planning & Environm Netherlands, US EPA, Int Global Atmospher Chem Panel IGBP, Eurotrac 2, Commiss European Union, UN FAO