BOW VALLEY <BVI> TO SELL NORWEGIAN SUBSIDIARY Bow Valley Industries Ltd said it agreed to sell its wholly owned Norwegian subsidiary to Elf Aquitaine Norge A/S of Stavanger, Norway for 13 mln Canadian dlrs. The principal asset of the subsidiary, Bow Valley Exploration Norge A/S, is an eight pct interest in the Heimdal gas and condensate field offshore Norway. The sale is expected to conclude by the middle of April, Bow Valley said.