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by Lovins, L. Hunter; Wallis, Stewart; Wijkman, Anders; et al.
by Wijkman, Anders; Timberlake, Lloyd
by Wijkman; Anders
by von Weizsacker, Ernst Ulrich; Wijkman, Anders
by Von Weizsäcker, Ernst Ulrich; Wijkman, Anders
by Ernst Ulrich von Weizsäcker; Anders Wijkman
by Anders Wijkman; Lloyd Timberlake
by Wijkman, Anders