Oil and the Canadian environment / 
editors, Donald Mackay, Wyman Harrison. 
 - [s.l. :  s.n.,  1973] 
 - iii, 142 p. :  ill., maps. 
<br/><br/> "Proceedings of the conference, 16 May 1973, sponsored by the Institute of Environmental Sciences and Engineering, University of Toronto." 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Petroleum industry and trade--Environmental aspects--Canada.<br/>Oil pollution of rivers, harbors--Canada.