"Theorie" . . "Gesundheitsrisiko" . . "Bewertung" . . . . "Produktlebenszyklus" . . "Umweltbelastung" . . "Kosten-Nutzen-Analyse" . . . "Life-cycle impact assessment : a conceptual framework, key issues, and summary of existing methods"@en . . "Life-cycle impact assessment : a conceptual framework, key issues, and summary of existing methods" . . . . . . . "Life-cycle impact assessment a conceptual framework, key issues, and summary of existing methods"@en . . . . . . . . . . . . . .