000 02127nam  2200421zi 4500
0019.867990
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008190205s1987    onca    o    f000 0 eng d
040 |aCaOODSP|beng|erda|cCaOODSP
041 |aeng|bfre
043 |an-cn---
0861 |aEn13-5/87-77E-PDF
1001 |aBarica, J., |eauthor
24510|aIncrease of nitrate in the Great Lakes / |cby J. Barica.
264 1|aBurlington, Ontario : |bNational Water Research Institute, Lakes Research Branch, Canada Centre for Inland Waters, |c1987.
300 |a1 online resource (18 pages) : |bfigures.
336 |atext|btxt|2rdacontent
337 |acomputer|bc|2rdamedia
338 |aonline resource|bcr|2rdacarrier
4901 |aNWRI contribution ; |v87-77
500 |aCover title.
500 |a"Division control no. ECD-10/87E."
500 |a"October 1987."
500 |a"This manuscript was presented at the 5th International Symposium of CIEC "Nitrate Contamination of Natural Waters", Balatonfured, Hungary, September 1987. To be published in the Symposium proceedings. This copy is to provide information prior to publication."
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
5203 |a"In the Laurentian Great Lakes, the world's largest freshwater system, the concentrations of nitrate have increased over the past twenty years by 200% and over. In Lake Superior, this increase hase been four-fold in sixty years, and in Hamilton Harbour on Lake Ontario, six-fold in thirty years"--Abstract.
546 |aIncludes an abstract in French.
69207|2gccst|aWater quality
69207|2gccst|aWater pollution
7101 |aCanada. |bEnvironment Canada.
7102 |aNational Water Research Institute (Canada). |bLakes Research Branch.
830#0|aNWRI contribution ;|v87-77.|w(CaOODSP)9.844121
85640|qPDF|s1.36 MB|uhttps://publications.gc.ca/collections/collection_2019/eccc/en13-5/En13-5-87-77-eng.pdf