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000
| 01818nam 2200349zi 4500 |
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| 001 | 9.896376 |
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| 003 | CaOODSP |
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| 005 | 20221107174311 |
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| 006 | m o d f |
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| 007 | cr cn||||||||| |
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| 008 | 201008s1990 snca o f000 0 eng d |
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| 040 | |aCaOODSP|beng|erda|cCaOODSP |
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| 041 | 0 |aeng|afre |
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| 043 | |an-cn--- |
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| 086 | 1 |aEn37-339/1990-PDF |
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| 245 | 02|aA river under siege = |bUne rivière assiégée. |
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| 246 | 11|aRivière assiégée |
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| 264 | 1|aRegina, Saskatchewan : |bEnvironment Canada, Inland Waters Directorate, Western and Northern Region = Environnement Canada, Direction générale des eaux intérieures, Région de l'Ouest et du Nord, |c1990. |
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| 300 | |a1 online resource (2 unnumbered pages) : |billustrations |
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| 336 | |atext|btxt|2rdacontent |
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| 337 | |acomputer|bc|2rdamedia |
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| 338 | |aonline resource|bcr|2rdacarrier |
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| 500 | |aCaption title. |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 520 | |a"Most rivers start high in the mountains. Rains, snowmelt, glacier melt and groundwater join to form the beginnings of the river. Even at this early stage, isolated in the high reaches of the mountains, the river can be contaminated. Rain and snow can pick up airborne pollutants from cities and factories and deposit them over the mountains in the form of acid rain or chemical pollution"--Page [2]. |
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| 546 | |aText in English and French. |
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| 650 | 0|aStream ecology|zCanada. |
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| 650 | 0|aWater|xPollution|zCanada. |
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| 710 | 1 |aCanada. |bInland Waters Directorate. |bWestern and Northern Region, |eissuing body. |
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| 792 | |tA river under siege = |w(CaOODSP)9.903175 |
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| 856 | 40|qPDF|s3.59 MB|uhttps://publications.gc.ca/collections/collection_2021/eccc/en37/En37-339-1990.pdf |
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