International Conference on Short and Medium Span Bridges, Proceedings., Location: Toronto, Ont, Can, Sponsors: Canadian Soc for Civil Engineering, Montreal, Que, Can;American Concrete Inst, Detroit, Mich, USA;Canadian Inst of Steel Construction, Willowdale, Ont, Can;Canadian Portland Cement Assoc, Toronto, Ont, Can;Canadian Prestressed Concrete Inst, Can;et al