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%T Preventative environmental policy: prerequisites, trends and prospects %A Simonis, Udo E. %J Ekistics: reviews on the problems and science of human settlements %N 313 %P 369-372 %V 52 %D 1985 %@ 0013-2942 %C DEU %G en %9 Zeitschriftenartikel %W GESIS - http://www.gesis.org %~ SSOAR - http://www.ssoar.info