In the seventies and eighties he worked closely with the Swiss philosopher Denis de Rougemont as a counsellor of the Centre Européen de la Culture.
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A founding member of the Belgian confederation of nature conservation and environmental organisations, Mark Dubrulle was National Secretary of the Bond Beter Leefmilieu / Inter-environnement from 1970 to 1980, an activist group which he co-founded, together with Michel Didisheim and half a dozen friends.
On September 25, 1971 he was a co-founder of Inter Environnement – Bond Beter Leefmilieu, together with Dominique de Wasseige, Mark Dubrulle, Pierre Dulieu, Jan Tanghe and Baudouin du Bus de Warnaffe.
Mark Twain | Mark | Mark Wahlberg | Mark Knopfler | Mark Zuckerberg | Mark Rothko | Mark Antony | Mark the Evangelist | Gospel of Mark | Mark Ronson | Mark Spitz | Mark Foley | Mark Murphy (singer) | Mark Murphy | Mark McGwire | Mark Hamill | Deutsche Mark | Mark Taper Forum | Mark Millar | Mark Lewisohn | Mark Kermode | Mark Lanegan | Mark Waugh | Mark Rydell | Mark Goodson | Mark Owen | Mark Mothersbaugh | Mark Medoff | Mark Heard | Mark Dayton |