HOLLINGER <HLG.TO> COMPLETES UNIMEDIA TAKEOVER Hollinger Inc said it completed the previously reported acquisition of privately held Unimedia Inc, the owner of three French language daily newspapers and four printing plants in Ontario and Quebec. The company, which owns 58 pct of (Daily Telegraph Plc) said it named former Carling O'Keefe Ltd chief executive Pierre Des Marais as chief executive of La Societe Media Quebec, the unit acquiring Unimedia. It said his appointment is effective July 2.