plastics(英语:UV stabilizers in plastics) UVGI(英语:UVGI) Weathertestingofpolymers(英语:Weathertestingofpolymers) The ozone layer protects humans from this.Lyman
Review of the Field Testing and Commercialization of Transgenic Plants: 1986 to 1995 (PDF). The International Service for the Acquisition of Agri-biotech