"bruntlandcommission-1987" . "Report of the World Commission on Environment and Development: Our Common Future"^^ . "1987"^^ . "http://www.un-documents.net/wced-ocf.htm"^^ . "report" . . . . _:genid1 . _:genid1 . _:genid1 . _:genid1 . _:genid2 . _:genid2 . _:genid2 . _:genid2 .