Sylvia Ostry, chief statistician of Canada, talks with Andrew Brimmer of the U

Original Toronto Star caption: Sylvia Ostry, chief statistician of Canada, talks with Andrew Brimmer of the U.S. federal reserve board at an afternoon session yesterday of a Toronto conference attended by 8,000 North American economists. Topics of discussion at the conference, which ends Saturday, include aid to underdeveloped countries, wage and price control and financing of medical care. More stories and photos are on page 4.