00000nam 2200000za 4500 9.848273 CaOODSP 20241203113640 cr ||||||||||| 171205s1976 onc ||||o f000 0 eng d CaOODSP eng eng fre nl----- n-cn-on En36-502/58E-PDF En36-502/58 Levels of arsenic and selenium in the Great Lakes region [electronic resource] / W.J. Traversy ... [et al.]. Burlington, Ont. : Environment Canada, 1975, c1976. v, 18 p. Scientific series ; no. 58 Digitized edition from print [produced by Environment and Climate Change Canada]. Issued by: Inland Waters Directorate, Ontario region, Water Quality Branch. Includes bibliographical references. "Arsenic and selenium were determined in water sediments and fish samples from the international Great Lakes, in water samples from international rivers and selected rivers in Ontario and in precipitation samples from the Great Lakes region, to assess their present levels and to provide base -line data for future reference"--Abstract. Includes abstract in French. gccst Water pollution Canada. Environment Canada. Canada. Inland Waters Directorate. Ontario Region. Water Quality Branch. Scientific series (Canada. Inland Waters Directorate) no. 58 (CaOODSP)9.823618 PDF 1.04 MB https://publications.gc.ca/collections/collection_2017/eccc/En36-502-58-eng.pdf