00000nam 2200000za 4500 9.861119 CaOODSP 20241203113644 cr ||||||||||| 180824s1976 onc #ot|||f|0| 0|eng d CaOODSP eng eng fre n-cn--- En36-507/16-PDF Mercury levels in the rivers of western Canada, 1970-1976 [electronic resource] = Niveaux de mercure dans les cours d’eau de l’ouest du Canada, 1970 à 1976. Niveaux de mercure dans les cours d’eau de l’ouest du Canada, 1970 à 1976 Ottawa : Environment Canada, 1976. [30] p. : figures, maps. Social science series ; no. 16 Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographic references. "This report has been prepared to illustrate changes that have occurred in concentrations of mercury in major waters of Western Canada from 1970 to the present time. It was during this period that the significance of mercury in water and in the aquatic food chain became a matter of national concern"--Preface. Text in English and in French. gccst Rivers gccst Mercury gccst Water pollution Canada. Environment Canada. Canada. Inland Waters Directorate. Water Quality Branch. Mercury levels in the rivers of western Canada, 1970-1976 fre (CaOODSP)9.861121 Social science series ; no. 16. (CaOODSP)9.834690 PDF 1.42 MB https://publications.gc.ca/collections/collection_2018/eccc/En36-507-16.pdf En36-507/16