Search Results       Your search for [subject]Petroleum industry and trade -- Canada -- Ontario returned 1 record.           The effects of energy price changes on commodity prices, interprovincial trade, and employment. by Melvin, James R.; Toronto: Published for the Ontario Economic Council by University of Toronto Press, 1976. Subject: Petroleum industry and trade -- Canada -- Ontario; Interstate commerce -- Canada -- Ontario; Petroleum products -- Prices -- Canada -- Ontario.          Add to Book Cart Relevance: 37.36%