00000nam 2200000zi 4500 9.880406 CaOODSP 20241203113652 m o d f cr bn||||||||| 191009e197911##ykcb ob f000 0 eng d CaOODSP eng rda CaOODSP eng eng fre n-cn-yk En40-240/79-26E-PDF Baker, Sara Atkins, author. An environmental survey of selected Yukon River headwaters lakes impacted by communities / by Sara Atkins Baker. [Whitehorse, Yukon Territory] : Environmental Protection Service, Environmental Protection Branch, Pacific Region, November, 1979. 1 online resource (vii, 75 pages) : maps. text txt rdacontent computer c rdamedia online resource cr rdacarrier Regional program report ; no. 79-26 Cover title. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references (page 37). "Biological and water chemistry data were collected from six Yukon lakes in the summer of 1977. High dissolved oxygen contents and an absence of any significant concentrations of deleterious substances characterized the pristine waters of these oligotrophic lakes. The biological data may be considered to be typical of an unpolluted northern fresh water system"--Abstract, page i. Includes abstracts in English and French. gccst Lakes gccst Water quality gccst Environmental management Canada. Environment Canada. Canada. Environmental Protection Service. Pacific Region. Regional program report (Canada. Environmental Protection Service. Pacific Region) no. 79-26. (CaOODSP)9.879151 PDF 2.57 MB https://publications.gc.ca/collections/collection_2019/eccc/en40-240/En40-240-79-26-eng.pdf