title: Planetary quality.
authors.forename: Jan J
authors.initials: JJ
authors.lastname: Boersema
mesh_terms: D003246:Conservation of Energy Resources / Q000191:economics / Q000266:history; D003247:Conservation of Natural Resources / Q000191:economics / Q000266:history; D017753:Ecosystem; D049672:History, 19th Century; D049673:History, 20th Century; D049674:History, 21st Century; D006801:Humans; D018803:Models, Economic