00000nam 2200000za 4500 9.846610 CaOODSP 20241203113640 cr ||||||||||| 171103s1997 oncab||fo f000 0 eng d CaOODSP eng n-cn-on En13-5/97-117E-PDF The effect of past land use on groundwater nutrient concentrations, Point Pelee National Park, Ontario, Canada [electronic resource] / D.L. Thompson, ... [et al.]. Burlington, Ont. : Environment Canada, Water Science and Technology Directorate, [1997]. [14] p. : ill., map NWRI contribution ; 97-117 Caption title. Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. "This paper summarizes the results of the investigation into the history of the Blue Heron/Marsh Boardwalk site and identifies possible reasons for the distribution of PO4 and NH3 within the groundwater system"--Introd. gccst Waste water gccst Hydrogeology Thompson, D. L. Canada. Environment Canada. National Water Research Institute (Canada) NWRI contribution ; no. 97-117 (CaOODSP)9.844121 PDF 1.13 MB https://publications.gc.ca/collections/collection_2017/eccc/En13-5-97-117-eng.pdf