000 01746cam  2200349za 4500
0019.861119
003CaOODSP
00520221107160655
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008180824s1976    onc    #ot|||f|0| 0|eng d
040 |aCaOODSP|beng
041 |aeng|afre
043 |an-cn---
0861 |aEn36-507/16-PDF
24500|aMercury levels in the rivers of western Canada, 1970-1976 |h[electronic resource] = |bNiveaux de mercure dans les cours d’eau de l’ouest du Canada, 1970 à 1976.
24611|aNiveaux de mercure dans les cours d’eau de l’ouest du Canada, 1970 à 1976
260 |aOttawa : |bEnvironment Canada, |c1976.
300 |a[30] p. : |bfigures, maps.
4901 |aSocial science series ; |vno. 16
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographic references.
520 |a"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.
546 |aText in English and in French.
69207|2gccst|aRivers
69207|2gccst|aMercury
69207|2gccst|aWater pollution
7101 |aCanada. |bEnvironment Canada.
7101 |aCanada. |bInland Waters Directorate. |bWater Quality Branch.
792 |tMercury levels in the rivers of western Canada, 1970-1976 |w(CaOODSP)9.861121
830#0|aSocial science series ;|vno. 16.|w(CaOODSP)9.834690
85640|qPDF|s1.42 MB|uhttps://publications.gc.ca/collections/collection_2018/eccc/En36-507-16.pdf