The Canadian Wheat Board, Winnipeg, Manitoba, files a lawsuit against ConAgra meats Inc., Omaha, Neb., claiming it illegally exported Canadian grain. The CWB confines a monopoly on wheat and barley sales to millers, maltsters and export markets from western Canada. In the suit, the CWB claims ConAgra, between the sides of its subsidiaries, sold grain to a middleman in Quebec, who then allegedly