00445nam a2200157Ia 450000100060000000300090000600500170001500800410003204000130007308200210008610000090010724501130011626000410022930000100027054600070028021566PK-LaUMT20221004172546.0140409s9999    xx            000 0 und d  cPK-LaUMT  aW 668.4239bTEC-  aUNEP  aTechnoology progress on protecting the ozone layer:bflexible and rigid foams technical options reportcUNEP  aNew York,USA:bUnited Nations,c1989  a85 p.  aEN